RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (Full Version)

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dracy69 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/19/2006 5:18:18 AM)

is that like a mid setting?



nplaisance -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/19/2006 11:45:23 AM)

I'm thinking that it is. If it's not open enough, it could be restricting fuel from the hsn at higher rpm's. It's at least worth a check.



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/19/2006 6:15:21 PM)

Well, the engine is off to Hobby Services. Hopefully, they can fix whatever problem it had.
Now, to wait for a few days..................



REVO_RACER -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/20/2006 7:12:50 PM)

IDK BUT DID U TRY A NEW GLOW PLUG (MOST LIKLY NOT THE PROBLEM BUT IT COULD BE CRAPED AND STARTED TO DO THIS PROBLEM



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/20/2006 9:33:18 PM)

Yes, I tried everything....including a new glow plug. Glow plug was brand new and glow starter was fully charged. Same problem = dies under throttle.
I'm thinking maybe there was something wrong with the carburator. Maybe one of those little o-rings on the needles....maybe they went bad. Or, maybe whoever the genuis is who built my truck screwed up the needles so badly I couldn't get them right. Considering the way my truck was built, it wouldn't surprise me.
Anyway, Hobby Services should get my engine in a day or two. I hope they can diagnose and fix whatever it is.
There's a HUGE snowstorm here right now, so even if my engine was running, I couldn't go out to drive.



trevbart -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/20/2006 9:42:03 PM)

This .25 engine looks identical to the .21 Vertex found on the Redcat 1/8th buggy. I had identical tuning problems...

Then I discovered my 21 engine came with a split o-ring on the midrange adjustment (the smaller inner o-ring) . Replacing this cured all the problems.

Anyone know the bore and stroke of this engine? I'm wondering if the piston and sleeve will fit the Vertex 21...




chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 12:07:31 AM)

Found the specs for the Vertex .21 engine on E-Bay:


Horse Power
2.1ps / 30,000r.p.m.

Port
3

Displacement
3.46 cc

Bore / mm
16.6

Stroke / mm
16

Practical r.p.m. Range
3,000 ~ 35,000

Weight / g
390

Exhaust
Rear

Carburetor
Slide

Pull Stater
Yes

Link is here:
http://cgi.ebay.com/Vertex-21-3-5cc-Pull-Start-Engine-Novarossi_W0QQitemZ6057297109QQihZ009QQcategoryZ34062QQrdZ1QQssPageNameZWD1VQQcmdZViewItem



89ram -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 1:16:25 AM)

may be a bit late, but did you seal the motor? ie, carb base, back plate, etc? trevbarts split o-ring sounds like a good thing to check out. so has anybody got enough time on one of these trucks to see if they hold up to some abuse? i started out with warheads, but have since switched to revos[which i love]. but i have some friends that could afford one of these terrors.



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 1:24:34 AM)

No, I didn't think about sealing the engine. I guess I should've tried it, huh?
A few years ago, I owned an HPI RS4 Racer, with the OS .12 CV engine. I sealed the engine, and the thing worked great. It flew !!
We'll see what the diagnosis is when I get the engine back in a few days. A big snowstorm is over Denver, so it's not like I can drive right now anyway.

As for this truck holding up to abuse, I'm not too sure yet. The truck has a 90 day warranty on it, so I guess if you break anything, it can be replaced.
There is no slipper on the drive train, so it might take some abuse when landing from a jump. I'm impressed with the shocks. Lots of travel, and consistent throughout.

If anyone needs pictures of the Tower Terror MT, let me know. I'll be glad to post.



89ram -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 3:52:19 AM)

pics are cool[8D]



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 4:09:25 AM)

Here are some picks of my Tower Terror MT (before the engine was shipped off)



89ram -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 4:17:06 AM)

they look pretty good, i'm curious to see how they'll hold up to some rough stuff!



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 5:17:07 AM)

So am I.
Once I get my engine back, and some of this snow melts, IT'S ON !!!



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 3:21:42 PM)

Hello! I just received my Tower Terror and plan to break it in this weekend (weather permitting). It's my first R/C car/truck. I've been goofing around with electric boats for a while, but really just to amuse my kids. This is my first nitro anything. The price seemed right and so far the reviews aren't awful. The video on the Tower Hobbies site hooked me on it - I like the 'block long wheelies'.

My TT came with a note that says the high speed screw settings in the manual are wrong and you should break it in with 4 1/2 turns (not 3 1/2 per the manual) for the first tank of gas. I guess I'll try that and back it off if it's too rich.

I have a couple of questions, too:

The manual also suggested purchasing an infrared thermometer to monitor cylinder head temp but didn't say how hot is too hot? I didn't invest in one but I may if it makes sense.

The ambient temps are going to be 40 at the highest over the weekend - I saw the suggestion to wrap the cooling fins in foil. Do I do this until it's warmed up or leave it on?

Thanks,
Jim



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 5:21:03 PM)

As for monitoring the cylinder head, you don't need an infrared temperature gauge (but they sure are nice). If you can, get one.
Or, you can try the "spit test". Put a drop of spit or tap water on the cylinder head. If it boils off immediately, the engine is too hot. Shut it down and richen it. If the water takes several seconds to boil away, the engine is within temperature range.
As for the foil, this was suggested to me as well. The temperature around here was in the 40's when I tried to break mine in. The foil around the cylinder head will help the engine get up to temperature faster.
Let us know how break in goes. Let me know how your engine runs.



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 10:56:02 PM)

Well it ran for about 15 seconds, was smoking quite a bit, got to the end of my 40 foot driveway and stalled. I pulled it until 4 of my fingers on 2 hands were bleeding. The fargin thing won't run. I tried all sorts of different settings of the high-speed screw. It floods immediately - gets hard to pull - fuel comes out the muffler. If I clear the flood and start over it will run for about half a second, immediately flood and stall.

It was 40 degrees out so I brought it in the house to let it warm up to 70 degrees. Does the same thing.

I put it in the middle of the driveway, dumped my freshly bought fuel all over it and set it on fire. Once it cools I'm going to send it back to Tower Hobbies and ask for a warranty repair.











Okay so I didn't set it on fire. But I'd like to. It's really made me angry.

Jim



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 11:44:16 PM)

Follow-up.....

My brother swung by and we got it running but only with the throttle cracked open (via the transmitter). It won't idle. After we finally got it running the recoil starter broke. I'm beginning to think this thing is a giant hunk of crap.

Jim



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/21/2006 11:53:14 PM)

Turbojimmy,

I had the exact same problems as you did. Read my previous posts on pages 4 through 5.
Mine wold idle OK (I had to open up the idle by turning the idle screw), but it would always die whenever I applied any throttle.
And just like yours, my pull-starter broke too. And just like you did, I tried just about every kind of setting I could on the hi-speed needle (and the low-speed).
I sent my engine back to Tower/Hobby Services for repair. The engine that comes with this has a 2 year warranty, so if you want, you could send yours in.

Your the second person to have this happen to them.
I'm beginning to think that Tower has, in fact, sent out a giant piece of crap. The truck, I can see, has some pretty good potential, but the engine is a piece of junk.



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 12:28:10 AM)

quote:

ORIGINAL: chriswebb70

Turbojimmy,

I had the exact same problems as you did. Read my previous posts on pages 4 through 5.
Mine wold idle OK (I had to open up the idle by turning the idle screw), but it would always die whenever I applied any throttle.
And just like yours, my pull-starter broke too. And just like you did, I tried just about every kind of setting I could on the hi-speed needle (and the low-speed).
I sent my engine back to Tower/Hobby Services for repair. The engine that comes with this has a 2 year warranty, so if you want, you could send yours in.

Your the second person to have this happen to them.
I'm beginning to think that Tower has, in fact, sent out a giant piece of crap. The truck, I can see, has some pretty good potential, but the engine is a piece of junk.


Actually it almost sounds like the opposite problem. It would run okay if you gave it gas, it just wouldn't idle (once I finally got it started). I never got to tweak the idle screw because the rope pulled out of the starter before I could get it running again. I've asked them to send me a new starter. I thought maybe I could take it apart but once the spring pops out (which it did) it's basically trash.

I might swing by the local hobby store to see if I can get a recoil starter in the meantime, assuming they're not too much $$. I really want to see this thing go.

EDIT: I must say that Tower Hobbies customer support is excellent. They immediately got back to me and said that they're sending a new starter. They also said that it sounds like it's lean (I think it is now) and that the settings in the manual are starting points - they need adjusted for my environment. I guess I believe that. These are sensitive little devices. It's been a long time since I had to mess with a carb.

Jim



muck76 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 1:13:08 AM)

Jim your problem sounds normal. Rich engines will have a hard time idling and flooding until break in is done. Leaning it a little will help. If it is 40 outside, did you wrap the head? That will help to get the engine up to operating temp and help with the flooding issue when running. YOu may need to feather the throttle to keep it running during break in.

Chris' problems do not sound normal.



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 1:19:18 AM)


quote:

ORIGINAL: muck76

Jim your problem sounds normal. Rich engines will have a hard time idling and flooding until break in is done. Leaning it a little will help. If it is 40 outside, did you wrap the head? That will help to get the engine up to operating temp and help with the flooding issue when running. YOu may need to feather the throttle to keep it running during break in.

Chris' problems do not sound normal.


Thanks muck76. Leaning it a bit is what eventually led it to running. I'm PO'd that I broke the starter - things were finally looking up. We were just about to bring it outside (started it in my warm basement, which also helped) when it broke. I have a lot to learn with this stuff and don't want to condemn a potentially good product as a result of my inexperience. I just got a bit frustrated with it.

Jim



chriswebb70 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 1:22:46 AM)

Turbojimmy,
If you can get a new pull-starter, let us know how your engine runs. When my pull-starter broke, I used a spare HPI pull-starter I had.
I'm very curious to see.....if anyone can get this thing running good.



turbojimmy -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 2:00:49 AM)

quote:

ORIGINAL: chriswebb70
Turbojimmy,
If you can get a new pull-starter, let us know how your engine runs. When my pull-starter broke, I used a spare HPI pull-starter I had.
I'm very curious to see.....if anyone can get this thing running good.


I'm going to see if I can get a replacement starter tomorrow. Tower is sending me one, but if mine broke after a couple hours of use I'm thinking it can't be bad to have a spare around. Plus after watching my brother try to hold this monster down while I worked the throttle I'd really like to see it rip across the yard. I tried to get a 1/4" drive 12mm socket with a universal and extension on it onto the crankshaft but there's not enough clearance. I wanted to use a cordless drill to start it. I may be able to rig something else up if I can't find a recoil starter tomorrow.

Also, in a very strange twist of fate, the technician who responded to my problem at Tower was Chris Webb. You can't make this stuff up.

Jim



muck76 -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 2:00:59 AM)

i do not know how much room there is behind the engine, you might be able to use a cordless drill, and 1/4 drive 12" extension, and a socket to make a roto start for it. I have done that in the past.

As far as wrapping the head, i would recommend it in any temp below 45. From 50-40 i use a babay sock, any thing below 40 i use alum foil. Helps a lot. Other wise you wind up leaning the engine too far to get the temp up to par. Then your engine could get ruined from being too lean.
I bet if you do a search on here for winter driving some one may have pics up for you to see. If you have any other questions on wrapping lmk.



89ram -> RE: Tower Hobbies Nitro TOWER Terror MT .25 RTR (12/22/2006 2:03:29 AM)

there is a thread called winter driving, i beleive. just search.[;)]



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