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Bob Stormer, scratch built Monster Project.

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Old 01-17-2010, 11:53 AM
  #76
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Default RE: Bob Stormer, scratch built Monster Project.


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ORIGINAL: Bob-Stormer

I think I've got it to 8 - 10'' without cantilevers.

more pics soon.
just pointing out its possible to gain travel and keep the same shocks for a consistancy with the front end. of course you can throw something else back there to increase the travel. IE air shocks, but thought it would be cool to keep the same look.
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Old 01-18-2010, 01:07 AM
  #77
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Default RE: Bob Stormer, scratch built Monster Project.

Quote:
ORIGINAL: quarterscalelegends


Quote:
ORIGINAL: Bob-Stormer

I think I've got it to 8 - 10'' without cantilevers.

more pics soon.
just pointing out its possible to gain travel and keep the same shocks for a consistancy with the front end. of course you can throw something else back there to increase the travel. IE air shocks, but thought it would be cool to keep the same look.
I don't think those front shocks are gonna hold up the truck "as is". much less over-levered to created travel... smashed flat coils... ...lol...
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Old 01-18-2010, 01:23 AM
  #78
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Default RE: Bob Stormer, scratch built Monster Project.

Rear swing arm:

Wasn't sure what I was going to do here. Because the sprocket is so big there is no clear way to connect the 2 sides of the swing arm. Ended up with 2 rods across the back to clear the sprocket. Made it pretty stiff. Not as stiff as I'd like, but stiff. Also, 20" out from the pivot point of the swing arm, the sprung weight of the back is about 20 pounds. That's without body, no cage, no mechanicals for the shocks or mounts, no batterys. That's a LOT of weight to add. I'm of the impression that the little Integy shocks won't have the spring power necessary to hold up the car and get me the kind of travel I want. When I hit the brakes, I want the car to really unload the back with lot's of movement, monster truck style. That requires pre-loading a soft spring with lots of travel. I have some ideas.
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Old 01-18-2010, 01:24 AM
  #79
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Default RE: Bob Stormer, scratch built Monster Project.

Rear suspension:

Rear suspension movement test. Everything lines up well, lot's of travel potential, and everything is very square and tight.

[youtube]http://www.youtube.com/watch?v=KugUab5fKlE[/youtube]
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Old 01-18-2010, 04:38 PM
  #80
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Default RE: Bob Stormer, scratch built Monster Project.

That's cool!
Giving me lots of ideas for how to do the suspension on my build.



I see you've got those welding magnets.
My mate just bought me a couple of those the other day.
Never seen them before, or taken any notice of what they were anyway (I'm still a newbie welder) but they seem like a great idea!
Good for keeping things true.





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Old 01-18-2010, 05:55 PM
  #81
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Default RE: Bob Stormer, scratch built Monster Project.

Tone servo's got here. Man, that one is a MONSTER! Can't wait to do something with it.

and from the "How cool is that?" files, we were at an RC race in Lethbridge Alberta this weekend. While there, and less than 100 feet from the track, turns out we were on the route for the Olympic torch. Very cool with all the security and traveling road show of it all. Takes a LOT of people to pull this off. Was quite amazing to be a small part of that "spectacle".
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Old 01-20-2010, 01:06 AM
  #82
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Default RE: Bob Stormer, scratch built Monster Project.

Rear suspension shock mod:

The little shocks won't work. just not enough travel and not enough spring. I ended up using a fox mountain bike shock. They have notoriously heavy springs. This one is quite light, at 400 pounds. To get the travel I want, and support the estimated weight, I suspect it needs to be 1.75-2" out from the pivot point of the swing arm. So, here's the new mount and the modded swing arm to compensate. The bar in the second pic was welded to the front of the swing arm and is now the lower shock mount for the rear.
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Old 01-20-2010, 01:49 AM
  #83
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Default RE: Bob Stormer, scratch built Monster Project.

Rear Upper shock mount:

Wanted something swoopy, and to leave a lot of room around the shock to celebrate it. But still have TONS of strength as the leverage on that puppy is HUGE. The spring on the shock is in the 400-500 pound range. Looks to be about 8 inches of rear suspension travel. Remember this thing is not going to catch air at this point. Just working through designs. This car will be slow and likely never leave the ground.

Starting to look like something. Still a LONG way from being done.
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Old 01-20-2010, 01:56 AM
  #84
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Default RE: Bob Stormer, scratch built Monster Project.

Love your work mate, the standards are incredible......
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Old 01-20-2010, 02:00 AM
  #85
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Default RE: Bob Stormer, scratch built Monster Project.

Rear suspension shock test from back and from the side.

[youtube]http://www.youtube.com/watch?v=SDbzWZdS9PA[/youtube]

[youtube]http://www.youtube.com/watch?v=iKqOlcpi0kE[/youtube]
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Old 01-20-2010, 02:19 AM
  #86
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Default RE: Bob Stormer, scratch built Monster Project.


Quote:
ORIGINAL: Dirty_Vinylpusher

That's cool!
Giving me lots of ideas for how to do the suspension on my build.

I see you've got those welding magnets.
My mate just bought me a couple of those the other day.
Never seen them before, or taken any notice of what they were anyway (I'm still a newbie welder) but they seem like a great idea!
Good for keeping things true.
I'm glad people enjoy it. Makes it worthwhile and hopefully inspires others to just do it. Welding magnets are great for stick or Mig welding, not so great for TIG, they pull the torch cone around unless they are a pretty good distance away from the weld area.




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ORIGINAL: troppo

Love your work mate, the standards are incredible......
Appreciate it.
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Old 01-20-2010, 02:30 AM
  #87
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Default RE: Bob Stormer, scratch built Monster Project.

suspension works beautifully!!!!
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Old 01-20-2010, 02:42 AM
  #88
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Default RE: Bob Stormer, scratch built Monster Project.

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ORIGINAL: da mad maori

suspension works beautifully!!!!

If only I can get the front to do the same. Gonna be tough though. 4 times less movement on the front and I have to much spring with a mountain bike shock. This means I have to do a cantilever on the front to compensate the spring, OR, give 1/4 midget shocks a real thorough look. I've been looking at the stuff from Tanner, and they do a coilover shock with modifiable valving with spring rates as low as 55 pounds. Gonna run anywhwere from $150-$200 a corner to do them. I'm going to order a set of 4 tanner gen-2's, and mix up the valving a bit and order a set of 75 pounds springs as well. I'm thinking they are more suited to what we need than mountain bike shocks.

Here's a link to tanner shocks.
These are pretty big, outside of spring is 2"od, and they have up to 5" of stroke. Might be the ticket for a large scale build though, a vehicle in the 100-400 pound range.
http://mittlerbros.com/shocks.htm
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Old 01-20-2010, 11:13 PM
  #89
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Default RE: Bob Stormer, scratch built Monster Project.

Called a Tanner shock dealer today. Ordered 4 shocks, 2 of which will be valved 2/2 and 2 will be valved 3/3. I ordered 2 of 55# springs and 2 of 75# springs. Should be about as good a place to start as any. I'll do some comparisons and measurements when they get here.
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Old 01-21-2010, 12:47 AM
  #90
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Default RE: Bob Stormer, scratch built Monster Project.

Wow.

Are you working on this thing 8 hours/day or something?
Coming along nicely!














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Old 01-21-2010, 04:17 AM
  #91
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Default RE: Bob Stormer, scratch built Monster Project.

Excellent work , Bob.
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Old 01-23-2010, 04:58 AM
  #92
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Default RE: Bob Stormer, scratch built Monster Project.

Thanks all for the kind words.

Front cantilevers.

Man, this was a tough one to over come. The design from the start was for the little Integy shocks mounted pretty traditionally off the lower a-arm and tie into the chassis. But they aren't going to have enough spring or travel to get what I want. So, had to go the cantilever route. To find room for the mountain bike shocks, and make it look like they were supposed to be there was quite a challenge. And to top it off, I want to leave room up there for that Tone servo that I'm sure is going to end up on the vehicle. The shocks have 400# springs on them, and through some good general estimation, I'm going to overlever the front shocks 3.75:1 with the pushrod 2.5" out from the pivot on the lower a-arm. That should get me the arms at about mid travel with an estimated front end load of 40#... "I think". I can't wait to find out though. When you're loading shocks that hard I am of the opinion you need to beef up that kind of stuff. A spring under 400 pounds of tension is no joke. So most of the stuff where a shock is over levered for mechanical advantage is pretty beefy.

I like where the front shocks ended up. I think they kind of match the angle of the rear, and all of them are in the center of the chassis at similar angles. Looks pleasing to the eye.

These are 5/8" bolts with a tube over them that I'll weld the shock mounts to.

and OHBOY!!!! am I getting some good ideas for the next one of these!
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Old 01-23-2010, 05:16 AM
  #93
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Default RE: Bob Stormer, scratch built Monster Project.

I just realized... If I get the shocks mounted and finish the cantilevers, I'm actually pretty close to a test drive if I wanted to be. It's coming a long. I want it "mostly" done by Mid February for a race we are going to. It's creeping up!
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Old 01-23-2010, 11:32 AM
  #94
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Default RE: Bob Stormer, scratch built Monster Project.

Ohh,this is so nice and clean.I guess it is not even a bacteria on itDo you sell welds?I want to buy 3 meters
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Old 01-23-2010, 05:01 PM
  #95
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Default RE: Bob Stormer, scratch built Monster Project.


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ORIGINAL: Lars from Norway

Ohh,this is so nice and clean.I guess it is not even a bacteria on itDo you sell welds?I want to buy 3 meters

Yes, send $29.95 in a self addressed stamped envelope to......

I had a friend, great guy, miserable fabricator (lot of heart though). He'd weld up his stuff, grind it down so it didn't look so bad and then smooth on some JB weld to the joint. Hit with a little sand paper, paint it, and it looks like butter. For a non-structural weld where beauty is important, give the JB weld thing some consideration.
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Old 01-24-2010, 07:34 AM
  #96
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Default RE: Bob Stormer, scratch built Monster Project.

Front cantilevers and mounts. ended up being 14 pieces of hand shaped metal. I "REALLY" like how they turned out and the direction we took with the design. Hopefully pics tomorrow.
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Old 01-25-2010, 04:18 PM
  #97
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Default RE: Bob Stormer, scratch built Monster Project.

Beautiful build. Looks like one tough rig. Look forward to future updates.
Man, I wish I could weld []
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Old 01-25-2010, 06:47 PM
  #98
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Default RE: Bob Stormer, scratch built Monster Project.


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Beautiful build. Looks like one tough rig. Look forward to future updates.
Man, I wish I could weld []

Everybody can weld, I taught my daughter (although... most 16 year old girls don't have a lot of use for that skill, but I showed her how). and with decent MIG welders in the $400-$500 range, there's never been a better time. Get some scrap metal and weld some junk together. Once you own a decent welder, you own it forever. That's a good value. Make something clever for your wife or make wall brackets for your garage. Doesn't have to be something cool. You just need time to get used to it and look for reasons to use it. Once you get a good understanding of it, there's nothing more empowering than "KNOWING" you can make anything. Making cool bicycles out of junk, yard art, new barbecue, GET OUT THERE AND MAKE SOMETHING!!!!
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Old 01-25-2010, 07:14 PM
  #99
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Default RE: Bob Stormer, scratch built Monster Project.

On the subject of welding I notice a lot of new guys here doing some MIG stuff and small welds, spot welds, etc. Here's a quick tip or two that will help make for better faster spot welds and smaller welds and make you look like a welding guru to your neighbors. Just before you weld, cut that little "dingle-berry" off of the electrode. makes for a quicker more accurate start. I do it for every spot weld. And clean your base metal, get the mill scale and rust off of it. And get the argon mix, rather than c02 for a shielding gass, makes for a better looking weld. Also, before you pull the trigger, slowly move the gun over the area, just like you'd be welding, but don't pull the trigger. What you're looking for is things that might snag you, or obstructions or obstacles. Just the way you see a golfer step up to the tee and swing a bunch of times before hitting the ball. It helps get your head in the game. Do a few dry runs before you pull the trigger. Give yourself every chance to succeed.


Most entry level welders, can get about 95% of their questions answered on this one page:
http://www.millerwelds.com/resources...tips/MIG_tips/

Welding is a good skill to have. VERY EMPOWERING. I'm just an enthusiast, I'm no expert. That said, Get out to the garage and make stuff!!!!
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Old 01-25-2010, 07:22 PM
  #100
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Default RE: Bob Stormer, scratch built Monster Project.

are you doing mig or tig with this project?
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