i heard that the hyper 21 rotostart will work on the sts.28,is this true??

www.clevelandmodels.co.uk
e-mail : [email protected]
Phone & Fax : 01642 241511
ask Paul

Sorry,we have problem on the rotostart backplate. Another company FLYING-POINT Co, Ltd. claims that they have the patent right of the rotostart backplate. So we can't sell it. That is why the rotostart backplate be delayed. We are talking with the FLYING-POINT Co, Ltd. We need to buy the backplate from them then install on our engines.

thats if you use the hyper21's starter shaft.

Darn!!!

I melted the pullstart cord off my STS28!!!

The good thing is, the pullstart assembly is easily disassembled and im gonna transplant my HPI pullstart cord on it.

Dino, STS should really make the cord longer and put better heat insulation. Just a suggestion ;) :D

Help!!!
 

Hi There

I have recently purchased a .28 STS engine. which I have put into my Rex-X. I have been running this for a couple of months now. But today I noticed that the LSN had come out completely.

If someone can tell me what the factory settings are for both the HSN and the LSN I would be greatful. I cannot seem to find this information anywhere.

Thank you all

Hi, I´m a new STS .28 engine owner from Spain. My english is not very good, but i want to try.

I´ve got a XTM Mammoth with a XTM .24,7 engine and i want to ask you some questions.

I don´t know : How many Hp has this engine ? what about the RPM ?

I have recently purchased the .28 STS engine and i want to break it as soon as i can. what % nitro gas for break in ?Can i use my XTM mammoth pipe for the engine?. What pipes do you use on the STS28 ?

there are too much questions but i hope you help me.

Thanks you for all.

HSN--2t
LSN--3t

We don't publish the HP rating for the engine due to there is no standardized dyno in the world so far. I would suggest you 25%nitro for break-in and running. I have no idea about XTM stock pipe. I'm using STS #0403 buggy tuned pipe on my MT. It works fine. If you can't find it,9853 also very good.

Hi Dino

Thanks for the needle setting. I also forgot to ask you what is the temp I should be aiming for. I know that this is dependant on weather conditions. Right now I am running at 200 - 220 F. I am using 25% Tornado.

Sorry to be a pain, but I'm not familiar with Head shims, what would be your recomendations? I'm not yet taken my cooling head off so I am unsure what is already there.

Thanks again

T2UK

When the air temp. is lower than 5C,stay at home.
When the air temp. is 5~15C (41~59F) Keep the engine temp around 80C(176F)
When the air temp. is 15~25C(59~77F) Keep the engine temp around 100C(212F)
When the air temp. is 25~35C (77~95F) Keep the engine temp around 120C(248F)
When the air temp. is more than 35C (95F) Keep the engine temp around 140C(284F)

If your engine works just fine and you feel the power is enough,you don't need to worry about the shim's setting. All STS engine shimmed for 30% nitro,if you are running 20% or 15%,you may need to remove some shims for getting the most power.

hi dino,

nice to see you back on the thread again, welcome back :)

Thanks Dino for all your advise. I've not had a chance run it yet but I'll be running my buggy tomorrow. Can't wait to WOT cos I know what this .28 can do

p.s why is there no technical spec on www.sts.com.tw regarding .28?

Is progress being made with Flying Point Co Ltd? Are roto-start fans any closer to getting what they need for their STS engines? Let us know how it's going.

It's a real shame that this technicality should prevent you from being able to design and sell your own roto compatible back plate for what is afterall your engine!! I find it hard to understand why a company has any right to patent what amounts to just a couple of gears mounted to the back of a nitro engine. Surely similar mechanisms must exist for many other applications!! :weird:

What you need is a good lawyer! :lol: Good luck.

Hi, you guys all seem pretty knowlegable about nitro, and I'm just getting into it, I just have a question about glow plugs. How many starts will a glow plug last for, or will they just last for one? i know that the glow starter will charge up enough to start the car a few times, but how many starts will the actual glow plugs last for? Reply to this or private message me with the answer please! Thanks!

Hi

Glow plugs should last quite a while, but you need to make sure the plugs you use are correct for both your engine and suited to the particular fuel you use.

Things like the ambient temperature play their part also - on both the tuning and what plug works best.

I'm in the UK, use 25 percent nitro fuel and find that RB No 6 plugs work well. Less nitro = hotter plug. More nitro = colder plug.

I inspect my plug after every run. If it starts to look dull, I change it BEFORE it breaks. How long they last depends on how hard/frequently you use your engine and also how lean you go with the mixtures. But you should find that they last between at least 2 weeks (2 race meetings) to 2 months (8 race meetings).

Thanks, so when i look at it, will it be pretty obvious if it's worn to the point where I need to replace it?

When new, the element will be shiny silver coloured. When you use your engine, you can 'read the plug' - it gives an indication to the how well your mixtures are set and the health of your engine.

If your glow plug's element loses it's nice shiny silver appearance, then the plug should be replaced. If you find yourself needing to replace your glow plug frequently, you need to either adjust your mixtures and/or change to a different heat rating on your plug.

Ok, do you know what a good plug and mixture setting would be to use in an Acme .18 engine with 20% Traxxas nitro fuel?

When tuned for best performance, mine wants to run at 275. If I richen it, it gets all rough at idle-midrange. 275 is with 80' outside temp. Help.

Medium temp plug
0.3 head shims
20% nitro
14% oil

Check the LSN. How many turns out from the end?

All the way in, then back out 4 turns.

STS28 Rotostart Backplate
 

Hi Dino!

Are these for real? It looks like someone is selling roto-backplates for the STS!!!

What a bummer, he only ships within the UK :(

http://cgi.ebay.co.uk/ws/eBayISAPI.d...985667230&rd=1

that is not true
i just ordered one, and im from hungary
u have to aski him for a shipping quate 1st
by
Engine works flawlessly in my Ofna Titan!!!

denisz, please do give feedback on the rotostart once you get it. Thanks!

I figured it out. O-ring for the HSN is not sealing. Where do I get replacements for my engine? Someone help, it's no fun to be down.

You can try
http://www.projectzen.net

I took out the o-ring and streched it a little. Fits just right. Seals now.
I have this engine in my monster, and it flies. Crazy power.
Thank you STS!

http://www.racernine.com/05-07-Odonn...s/DSC07950.jpg

this my truck powered by an sts.28 motor, piloted by racernine (glen krause)
we just won the odonnells off road championship monster truck expert class last weekend. it does have some serious power Also took TQ and trophy dash cups

Congrats!!!

hello dino

could i have the stock needle setting for the sts. 28
i can't get it to run properly so i think i am going to start fresh here and hope that that will help me out

thanks in advance

I am trying to find a dealer in the U.S. that carries the sts line of motors and engine parts is there one or not? I emailed zen but there is no reponse from them. why is it so hard to find these motors? all you can do is buy new ones off ebay. :mad: :mad:

I am in the same boat. I emailed zen, but no response. Do they carry parts?
I don't see anything on their site that says they do.

The bad situation will be better later in U.S.

Originally posted by dino.tw
HSN--2t
LSN--3t

STS Engines and Spares
 

hello everyone
just thought i would introduce myself to everybody.I have just started a new website in the UK and beyond supplying STS racing products,just give us a look www.sts-nitro.com.

Roto Start
 

So? :ha: where is the so called roto start for the sts .28 ? I thought it was promised in May? :flaming: :cry:

we have just sold out of the rotostart conversion.we will have somemore in about 10 days.

Hi Geggs - welcome to RCtech!

Cleaveland models, right? :)

Are these the same as the ones sold on ebay for the STS .28? Dino mentioned about the problems to do with the patents for the Rotostart back plate, which is why STS couldn't sell their own design. :mad:

Has this been sorted now? Or is this Roto start backplate that is now available made by a different company under liscence from the people that hold the patent?

Are the currently available STS roto start compatible backplates produced under liscence or bought from Flying-Point Co Ltd? Where do the ones on Ebay come from - are they 'bootleg' versions? :lol:

Considering the the simple mechanism involved, it seems pretty stupid that there would be any Patent rights or infringements thereof. A bit like a company successfully patenting chair legs. Or wheels. Or gears. If you know what I mean! :rolleyes: :lol: