How to fix a broken pull start?

[joshiestevens]

How to fix a broken pull start? Oh, and which MT?

HI there. I have broken my pull start. I pulled it to hard, and about 1.5 feet of string is out, but it is still attached. I think I have broken the spring.

Does anyone know how to fix these.

Also, random question: Thinking of upgrading - Should I get Mad Force or Savage SS. Every lhs in the UK sells the mad force, so parts are a breeze. However, I think Savage SS Parts are easy enough to get. I want a truck that wont get damaged easily, and will withstand abuse.

Hehe
Josh

 

[SkyMaxx]

I know how to fix them, but the walking someone through it can be tough without actually being able to see the problem or knowing which engine the pull start came off of.

I do repair them for people if they ship them to me...only thing I charge is shipping and parts.

PM me if interested.

As for a truck that can stand up to abuse, go for the Savage. Tried and tested. Can't speak up for the Mad Force as I haven't seen any in action.

 

[joshiestevens]

Thanks, I think I will try myself, and I WILL wear swimming goggles to protect my eyes from annoying agressive springs that like to jump out!!

Anyway, yeh, If anyone knows or has a mad force, can they tell me about them and what they think of them.

Also, I have seen all these videos, with the MT's jumping, and most of the time landing on their wheels. If you jump them super high, and land them on their wheels, does it damage them at all. If you do not land on the wheels des it damage them hehe.

Also, Is it easy to learn how to land, I have seen this Hayden on Video doing flips and things, its mighty impressive. I wonder if it damages his savage. Also, does anyone know his username, I would like to PM him as he lives in UK, and I have a question for him.

Thanks

 

[shorty]

Hi joshiestevens I'm hayden as u can see my username is shorty and yes i do damage my truck every now and then but mainly when i try something new like a double back flip and land on my lid.

 

[joshiestevens]

I see you have a savage. Where do you get parts for your savage, and do you reccommend it over a Mad Force. I have a Kyohsho TR-15 Stadium Force at the moment, and I want to do some quite big jumps like you do with your NMT, but I am too scared I will damage it, and also I have had no experience with jumping and I dont want to land it on its lid. Also, do you recommend using the body shell always, as I havent painted mine yet.

If you jump your NMT really high, but it lands on the wheels, does it get damaged, and the same with your Savage. I mean, I saw the video of you trying to get up the ramp, and you failed without cheating. Does it damage the truck when it rolls over and stuff.

Also, I just fixed my Pull Start. All I did was loosen 3 screws on the pull start case abit, and the string retracted back in, and it pulls fine, with lots of compression. "Feels abit hard to pul, but I think thta is because it is not attatched to the truck. Also, when I pul the pull start, the clutch bell and metal gear spin really fast. Should this happen?

Thanks
Josh

 

[shorty]

Ok let’s see
1: I get parts for all my cars from my LHS if he has them, or if he can get them for when I need them if not I use www.apexmodels.co.uk and yes I think savages rule.
2:my nMT is not very good for jumping big cuz even if I land it on its wheels the shocks can't always take it and yes you should try and always put ur shell on to add protection to ur car so that when u do just a silly little rollover it don’t hit any important parts
3: my savage can take just about any thing when it land on its wheel and it will do the silly rollovers all day long
4: as for ur pull start the clutch bell and metal gear spinning really fast it happened to me so I think its ok


ps:i think that i got every thing but just ask if i missed something

 

[joshiestevens]

Is it easy to land it on its wheels Shorty, I am just about to take my Tr-15 out for some 1 foot jumps or something, any tips not too break it.

Also, do you know anything about the Mad Force compared with the Savage. Yours is an SS right?

One last thing. My front shocks are ok, the chassis only touches the ground at the front if I apply quite a bit of pressure. However, on the back, if I give it a light push, the back of the chassis touches the ground, so I am worried that when I jump, I could damage something.
I have some Team Orion sledge shock oil (70 weight), I think this is thicker than the stock green kyosho oil, but I dont know what weight that is. Should I fill this in my rear shocks

Josh

 

[shorty]

landing is the same as motocross when ur in the air if u aply the throttle the front end will left up and if u aply the brakes the front will dip but if u dont want to damage it dont jump it


as for mad force v savage i dont know owt about the mad thing but i know i like my savages but have a look around I'm sure ull find some info

 

[joshiestevens]

I put the Sledge 70 weight shock oil in the rear shocks.
Results:

You need to appy more pressure now to get it down (more than before). However, if you push it down, and let go when the back of the chassis is touching the ground, it doesn't really return. It returns like 0.75cm ground clearance when it should be around 2.5. The way to get it up is to push it up, or to push the front of the truck down.

The front of the truck is nothing like the back. At the front, it is quite hard to push down and it returns very quikly. So you thing I need harder springs for he rear.

Josh

 

[olds97_lss]

Do you know if you have aluminum bodied shocks? I don't know the vehicle your talking about. If I had to guess, with a stadium type truck, you wouldn't really want to go over 50weight oil in any of the shocks. If you don't have aluminum bodied shocks, the heavier oil may blow then apart.

Oil slows things down, but I wouldn't necessarily depend on it totaly. The springs are what gives you your stiffness. If you get stiffer springs, you need to run a little heavier oil in them to counteract the springiness. If it isn't returning to level when you push it down, it's probably not a good idea to run that oil until you get springs that can bring it back level. Othewise, the ass is going to be dragging on you when you do take a jump. That's if the stiffer oil doesn't break something.

 

[joshiestevens]

The shocks are plastic, with a metal rod inside.

Also, got a question. When I start my truck, it jolts foward abit, even if I hold the brake on fully, I picked the truck off the ground, and watched the tires, they just move a little, sometimes stop etc... It isnt to do with my idle speed, I think it is to do with the metal gear and clutch bell. P.S - should the clutch bell get hot (the thing next to the small metal gear on engine)

Josh

 

[olds97_lss]

The jolting sounds like your clutch shoes/spring(s) are dragging on you in your clutch bell.

It normally gets as hot as the engine, since it's connected to the engine. But if it's getting much hotter than that, it's probably slipping pretty bad. You might want to pull the clutch bell off and check things to see what's going on. If the shoes are severly melted, get a new set and a new spring as well. If they aren't, take some really fine grit sand paper and skuff the shoes up a little and skuff up the inside of the clutch bell where they make contact.

 

[niggle]

I put the Sledge 70 weight shock oil in the rear shocks.
Results:

You need to appy more pressure now to get it down (more than before). However, if you push it down, and let go when the back of the chassis is touching the ground, it doesn't really return. It returns like 0.75cm ground clearance when it should be around 2.5. The way to get it up is to push it up, or to push the front of the truck down.

The front of the truck is nothing like the back. At the front, it is quite hard to push down and it returns very quikly. So you thing I need harder springs for he rear.

Josh

Heavier shock oil should not make the suspension harder to compress, only harder to compress quickly. Given that the suspension appears to be binding on rebound as well, I would strip the rear shocks down and look for bent shafts. Check also for bent hinge pins on the rear suspension arms.

If the front is rebounding quickly then you may want to refill the shocks, possibly with a slightly heavier oil in there too.

Don't go too heavy on the shock oil unless you are thinking of changing the pistons too. The shock bump/rebound rates are tuned by a careful combination of shock oil weight and piston hole diameter. If you use heavy oil with a small piston hole then you will blow the tops off the shocks on a heavy landing.

 

[joshiestevens]

I keep having to take my engine off, its well annoying. Are you shore this is the case olds97. I havent done anything to damage it.

Also niggle - if I put harder springs in rear, and lighter shock oil, would that fix it

Josh.

p.s - does anyone know factory engine settings for a .15 engine. Using the stock engine on the Kyosho TR-15 Stadium Force.

Josh

 

[olds97_lss]

You do what you want. But in most cases, if your cb is running hot, it's either your bearings are on their way out or gone, or your clutch shoes are dragging. The constant drag causes heat. The constant heat melts the shoes even more. If it is dragging, you will be replacing the shoes in a short while anyway. If you don't want to do it now, buy a new set of shoes for when it quits working. Probably a good idea to get new clutch bearings as well.

 

[joshiestevens]

It isnt getting any hotter than the engine, or metal gear next to it.

Josh

 

[olds97_lss]

Then you should be fine. The metal gear isn't a good gauge, but if it's no hotter than the engine crank case, then you should be ok.

 

[joshiestevens]

But I do not underdstand why it is moving fowards abit, even if I have the brake fully engaged

 

[suppaduppa]

If you do a search of the site you'll find a video of one of the members dismantling a pull start, fixing it and then putting it back together. Good Luck

Heres the link http://www.network-worker.co.uk/sc_video/fixing pull start.wmv Send you thanks to shorty he made it.

 

[joshiestevens]

Thanks for that, but it doesn't show what happens if the spring breaks, I think you just cut the end off, any way.

Is it me, or has he got a really large pull start.

Josh