kenazzo2000

thanks troppo and QSPSB2 ill try and look around as see what i find you helped me alot

QSPSB2

There are many brands of MIG welders out there under $200.00 And many brands of wire.... If you do purchase the H/F MIG... Just remember to use a good quality wire with it... The H/F wire is junk..... it's all snap crackle pop... very little weld wire....

Here is what I'm using....

WELDER>>>> http://www.harborfreight.com/cpi/cta...emnumber=94056

AUTO DARKENING WELDING HELMET>>>>>> http://www.harborfreight.com/cpi/cta...emnumber=91214

FLUX CORE WIRE>>>>> http://store.weldingdepot.com/cgi/we...ml?id=pfxNxXvg

QSPSB2

The currant axle diameter is 5/16'' But i plan on machining the ring gear to 1/2'' I may even attept to cut slines in it at 1/2'' and use a split axle with slines on matching ends... Then i can build the 3rd member like the real ones... So needles to say I'm looking around for various cutters to cut them splines... OR>>>> I know of a few machine suppies sites that sell splined shaft collars that i may be able to weld to the gear... Then i will look for a matching sline shaft and cut it to length.... https://sdp-si.com/eStore/

The wheels are>>> http://www.cometkartsales.com/store/wheels/vank2.htm

Good luck on your rear end build..... I hope you have patience

troppo

Wish i could do the whole machining bit, welding and metalshaping/fabrication is fine but lathe or mill work scares the hell out of me lol.
I love the look of those wheels i reckon a couple of 4x5 inch would be spot on for the rear bags, pity they are in the states, postage would be twice the cost of the wheels, havent seen any in aus but i`ll contact them to see what they can do for me. Those splined shafts will be perfect for the axle, have to look for some over here.
Thanks for the links mate.

speedygonzales

qsp do you know of any kart tires with tread? like an off road style or rally?

troppo

Het speedy
Check here http://www.cometkartsales.com/store/tires/tires.htm its a follow on link from the link qsp gave earlier, this is it http://www.cometkartsales.com/store/wheels/vank2.htm
Cheers
Troppo

QSPSB2

Why does a lathe/mill scare you??

I forgot your from down under... Here is the type of spline set-up i'm talking about... I'm sure i'll make something that will work good.... I'm going to build the 3 rd member like the real ones then... I also want to design it so i can change out the gears/ratios with ease...

You need to start a thread when you start building your rear end..

QSPSB2

Hey buddy..... I haven't forgot about you.... i'll email you on that tomorrow.... Getting these final wedding plans all together has me pulling my hair out... Chass has been working some long hours soo i'm trying to do the bulk of everything.... I guess as long as i don't forget the rings i'll be O.K.

I spoke with a guy at our local kart shop about custom cutting groves in my tires and he said he could cut any tread pattern i needed.... So after the wedding i'm going speak with him again on them.... I really wanted to get a little smaller tire and new rims for the Beretta... The ones i have now are a little big.... But i think i'll just leave it as it is and extend the ground effects on the body once i start building it.... I want it to look super low to the ground.... Ohh yeah..... Picture that baby with them big meats tucked nicely under the body.... Love that look.... ProStreet all the way....

I haven't done much on the Beretta chassis... I'm trying to get this rear end built first... Then i will work on the upper strut braces on the chassis... and then i will build and weld in all my needed brackets... Then i will at least have a roller... I'm also going to build a nice steel fuel cell for it.... Yes i know what you probably thinking... It's going to be heavy... YEP!!! But i'm not going to race it... It's going to be more of a show car....

I have started on the face plate for the 3rd member and done some grinding on the rear end....
BUSY! BUSY! BUSY!

Here are a few other tires i have looked at,

troppo

Well i havent done anything on a mill, and almost nothing on a lathe. When you dont know what your doing these things can bits and i hate being bitten lol
I will be starting a build thread when i start building, but i got canned a couple of weeks ago and i`m having a hard time finding a new job. Research doesnt cost so i`m doing that right now and when i get a new job i`ll start buying materials for the build.
Congrats on your upcoming big day mate, hope its a great one.
Cheers
Troppo

speedygonzales

thanks for the tire links and pics.

QSPSB2

Yeah buddy.... Always use cation while operating machinery... I have never injured myself but have seen many loose fingers/tips because they wasnt watching what they were doing... OUCH..... Sorry to hear about your job..... I own my own autobody/graphics business and it to has slowed down.... BIG TIME...... I wish you the best of luck on locating a stable job buddy.....Thanks on the congrats.... Can't wait to get it over... We have been planing this day for 2 yrs now.....

QSPSB2

Not a prob.... Well i now have the 3rd member base plate done... I will be starting on the pinion/bearing support soon... I also have the drain/fill fitting welded in the rear end now...

QSPSB2

I took a few videos of the Sheet Metal Rear End today.... Performed two Ring & Pinion alignment test... I was suprised how smooth it ran for being dry... I have started on the 3rd member and will update on it as i progress....


http://www.youtube.com/watch?v=tzYCWYygHFM


http://www.youtube.com/watch?v=8AgqY_ydhD4

troppo

That spun up nicely mate, is that the axle you`ll be using in the end or just a fill in one?
In the second vid it looks like theres something spinning around the back of the crown gear.

QSPSB2

No thats a temporary axle... It's 5/16'' and I'm going bore the gear to 1/2'' And run a 1/2'' axle. The crown/ring gear has an spacer on the side of it... It's where the key goes... But the key was worn out and kept falling out... So i driled a hole in it and ran a bolt through it.... Welded nut on one side and was good to go... that what you see spining.... I'm going to build a carrier for the gear soon.... Thanks!!!

da mad maori

nice work man thats cool

martsrc

Looking very nice.

tt-01 mamba

looking very nice,

can i ask what gears you're using in the rear? will they be able to take 18hp?

QSPSB2

Thanks! These gears are from a angle grinder i purchased from harbour freight... http://www.harborfreight.com/cpi/cta...emnumber=93179 I'm just using these gears until i get my new ones from. http://www.ereplacementparts.com/

I purchased a few sets for the BOSCH angle grinders.. There good quality gears.... As far as them being capable of handling 18 HP.... I haven't a clue... I'm not going to race the Beretta so i don't think i'll have a issue with that.... I may open it up from time to time and do a few burn outs but thats about it.... I designed this Rear end with this in mind.... I can install a much larger/stronger gear set if needed.... The crown/ring gear in it now measures about 1 3/4'' and the opening in the face plate is around 3'' so i can step up to a much larger gear set if needed... I will also build a larger 3rd member as well...

I took the gears out and inspected them for wear last night... They still look awesome.... After re-instaling them i coated the gears with 5w30 engine oil and tested them again.... They did run much smoother... Go figure.... I have started on the 3rd member and will post more pics as i progress... I have the base plate done and will now mark it in relation with the crown/ring gear and cut the material away... I will then build & weld in the pinion support tube.. 3/4'' Water pipe... Then i will build/weld in the carrier support's & bearing caps...

Try to keep in mind.... The Rear End is far from being done... So it does look kinda crapy as it looks now... I still have alot of welding in the gaps & low spots in the case/mating joints.... It should look very sharp once done and all painted...

Quarterscale Sheet Metal Rear End Test #3
http://www.youtube.com/watch?v=MTLLU1jIrUw

My main page... I will be uploading as i progress..
http://www.youtube.com/user/QSPSB2

QSPSB2

i've had a few PM.s asking me where i got my 4-link brackets... Well as i told them.... I built them... I am posting this so all knows just how i do this... i'ts very simple guys. All you need to do is print out the picture in the correct scale and cut it out. Then trace around it on the desired material... Then cut it out... Once you have all the pieces cut out close to the desired size... I cut all pieces about 1/8'' from the line... Then on one piece use a punch to mark the top hole...Drill the hole using a mill/drill press and do the same on the lower hole... Now once you have the lower & upper holes drilled.... Clamp all four pieces together securely.... all lined up in order as needed..I clamp mine down using a hold down clamp on the cross slide table. Drill the top hole thru all four pieces... Remove from clam and bolt together... Keeping all the pieces in perfect order....Now clamp it back down and drill the lower hole thru all four pieces. Remove from clamp and bolt together... Clamp back down to the table and drill the remaining holes... Now all four parts are identical...

Now remove both bolts and seperate the parts... Now grind the part to the line you marked on the part... Remember this 1st part must be correct... It will be your patern to follow while you grind/file the others from... Remove all burs from the parts & the edges of the other three... Now bolt the parts back together.. Keeping your 1st part the template on top... Now place the parts in a vice and concentrate on grinding the three biger parts to the edges on your top part... Now once you have all the parts ground the same, using a file, file all the parts level on all flat edges... Carefully file all the desired angles/corners as well.... Now once all the edges/angles look correct, remove from vice and remove top/bottom bolts... Now file all the burs of the edges of each part... Seperately... You will now have four identicle parts.... This method can be done any time you need more that one part...

This same method applies if you need to duplicate an exsisting part as well... Lets say you break a part... and can't locate a new one... Or there n o longer made... Then match up that part as you best can to the desired material and follow the same steps as above... Or lets say a part on your ride is a little weak and keeps bending... Then remove the part and follow the same as above on the desired material..

Even with little mechanical skills this can be accomplished.... I haver no choice myself.... When building an home built 1/4 scale car there are very little parts on the market that can be used... other than... bearings/hubs/misc parts etc.etc..

i'll post pics of these steps as well guys.... I am fully aware many of you know how to do this. But obviously some don't...

Good luck....

(((( Moderators... I hope you don't delete this... I think this could be some very usefull info for many out there that don't know how to make/duplicate RC parts..)))).

QSPSB2

The front 4-link brackets was done the same way...

QSPSB2

I now have the 3rd member pinion support welded in... And ran a few test runs on it.... I will now build the front pinion support.... I have uploaded some videos of the test here... http://www.youtube.com/user/QSPSB2

Here are a few pinion support build pics...

troppo

You`ve said this isnt going to be a shelf queen but your not going to race it either. What are you going to do about the axle steer problems caused by the straight axle?

QSPSB2

I'm really not to concerned about having any axle steer issues... The majority of the weight will be in the front end.... My front tires will also be the same diameter as the rear,,, So combined with proper camber i shouldn't have any issues.... But if i do run into an axle steer problem.. All i need to do is let off the gas in the rurns a little.... Many kart's have an axle steer problem running the live axles and thats what most do.... As do any car running a live axle.... To be quite honest the only time a live axle wont cause a axle steer problem is if it breaks traction...

Here is an interesting site regarding suspention geometry as well as many other interesting specs...
http://www.auto-ware.com/software/rsg/rsg.htm

troppo

Thanks for the link, but it says i dont have permission.