Check this out

A custom YX based 150 electric start engine

Due for release mid Jan, but located in the UK (They do export though)

Priced around the £500 mark

I spoke to them yesterday and they expect upto 18bhp out of them

( they cant go any more as the compression will be too high and the electric starter wont turn them over)

http://www.ooracing.com/150elecstartenginemadass.htm

I've put my name down on one for my ATC70

Nice!

That is AWESOME!!!

i want one!

Thats about 800 bucks + post. Not bad at all.....I'd buy one.

http://www.dirtmax.com/productclass.asp?pid=53&id=110

Details


1. MODEL: 4-stroke , oil cooler , single cylinder, manual clutch,
horizontal
2. Bore&stroke : 60X53
3. Cylinder capacity : 149.8ml
4. Compression ratio: 9.2:1
5. Power / torque : ≥14.5HP/9500±500r/min
6. maximum torque: ≥11N.m/5500±500r/min
7. Mini fuel consumption: ≤354g/KW.h
8. Ignition advanced angle: 15°± 2°
9. Valve gap(mm): 0.05±0.02
10. Fuel mark: above 90# GB484-89
11. Engine oil mark : SAE API 15W/40-SF
12. Engine oil consumption : 8g/KW.h
13. Transmission ratio : elementary: 3.722(18/67) first gear: 3.272(11/36) second gear: 1.937(16/31) third gear: 1.350(20/27) forth gear : 1.043(23/24)
14. spark plug size : A7TC
15. spark plug gap: 0.6-0.7
16. Ignition method: CDI
17. Clutch model : multi-plate manual clutch
18. Air filter model : sponge air filter
19. Lubricating system: pressure splash
20. Engine oil capacity: 1.1L
21. Start method: electric & kick start ( start any gear)
22. SIZE: 435X285X235mm
23. N.W: 21±1Kg

I want this when can I get a hold of one? How do you get a price from them and what comes in the box?

Havent a clue

I bet they only deal in quantity so a group buy might be on the cards

That also means we will be able to just buy the parts to convert any current yx motor to electric start also.

Your guess is as good as mine

Hi Guys

Well here is an update on this engine

5 of the first engines came into OO Racing last week, OO Racing have been working with YX in China for the last 2 years on these, they helped develop the engine for the sachs madass

I ordered the first engine along with a mikuni VM26 carb last week

I asked them to port the head and inlet and do some 3 angle seat work to give it a little more BHP, these engines come with a 7mm cam and uprated springs as standard

The compression cannot be increased else the electric starter wont turn them over.

At first they managed to get 16.9bhp out of it on the dyno but realised there were a few issues that needed to be addressed

The ignition timing was 10 degrees out on static which was altered by making an adjustable pick up sensor

The engine was then run up on the dyno again and made virtually no increase in power

They then looked at the cam timing and adusted it slightly along with adding a larger main jet to the carb as it was running a little lean on cruze

The end result is 18.6bhp and 10ft/lb

This is on a new motor that is still tight so I'd expect the numbers to go a little higher once its freed up a bit

I'm very happy with the results so looking forward to installing it in my ATC70 this week

make sure and post up pics man,

Do you know if there is a US distributer?

No, there isn't.





















You're stuck with your 110, now deal with it.

Got something planned for sure over the summer. I'll keep the 110 for a spare to when I want to race you

Send them an email or give them a call

They send stuff out all over the world

The engine should arrive towards the end of this week so I'll post up some pics when it arrives

Looking to get it installed this weekend too so will add more pics as and when

Can you p/m what you paid for it shipped to you? Where are you located?

I'm based in the UK so shipping was low

I bought a few extras for my pitbike at the same time so the price was alot more

Base engines are £500

My engine was £650 with the ported head work and 3 angle valve seats

What is that price in US dollars?

£1 = $1.61

£500 = $805

My guess is it would be almost 1K landed. Thats alot of cabbage when you think about it.....
I did say before it was a fair price, and I still think it is, but, you could get a yx160 and put a pullstart and decompression kit on it for a lot less.........but then again, electric start would be sooooo nice.

Here's a brief update

I've got the engine offered up but its a bit tight

Will need to grind either the frame or engine for clearance round the mounting tabs

Also had to cut and reweld the alloy inlet to mount the carb facing inline

I may get this motor for the A +

what tires are those???

They are Kings / Slasher tyres

http://cgi.ebay.co.uk/7-QUAD-BIKE-TYRE-16-...=item2a0ecd9c91

Good to know. I have a set in my shop.

Just need to do the wiring and bolt the engine in now

That looks sooooo nice...

That's nice! Runs an oil cooler?

Does that mean you got one..?

Not running a cooler

Emailed them and here is what they said.

15 bhp motor £499.99

19.6 bhp motor £699.99

Shipping per engine kit 30kg £79.99



We can also make the correct ignition looms for the D/C CDI.

I emailed them about the looms. What do you guys think? Is the 19.6 bhp just overkill. isn't a stock 450 close to that. $850 landed 15hp to the us isn't that bad at all. $1150 for the extra ponies. sure be a sick 70 that is in.

It's not worth it don't do it.

Don't you have yours yet? Call me I have a great trick for the Teryx 80mph no problem.

I have mine installed in the suspension show a plus bike that I tested this weekend at Duffyland and I love it!!!

I was able to clear the triple at duffy land and pulled off a backflip off the downhill!!! It Rips 4 sure!!!

Great motor. I placed an order for 20 motors. Tres said he will wire em up for free to the first 20 callers..


500 INSTALLED (send your $$$ now please. / I have egyptisan bank account that I cant get my 750K out of, so if you want, for the first 20 people to PM me, you can send $5,000 each,....as soon as the motor is installed, you will get a 3rd party out of state bank check for 4500,.....plus an extra $200 kicker .........making the price of this item only $300 US dollars!!!)




















Just kidding......I want one sooooo bad!!!

Austin how the heck is that engine? how is the power. looks sick.

Update time

I've adapted an ATC185 front drum hub to fit my narrower ATC70 front forks

I had to machine it down and weld on the central hub to a different offset to fit

Then I shotblasted it and powder coated it up





I also completed the exhaust system, I bought in some 32mm od stainless diary bends and cut and shut the exhaust system I bought to make it fit correctly

Once i'd smoothed and polished the welds it looks like one continious piece of tube





I also fitted a new front wheel and tyre, just need to get round to fitting the new rear wheels and tyres to suit





Going for some satin black 8x8 rims with 3/5 offset on the back for the 18x9.5x8 tyres

Using atc200x hubs which are 4/110 spacing

top notch as always man!

Holy #$&!

A stock 450 is 45-50 Horsepower.

Damm.

Nice!

All I have to say is it is the best engine I have ever ridden in a 70. the trans is so smooth and has plenty of power. I have to fit the oil cooler in a few weeks and get busy changing the color and wheels. It flat out smokes a 125. Going up one more tooth in the rear sprocket and i think the gearing will be dialed in. Olds here I come.

austen this is chrisg from qhrq.com

what do you do for a living? you've always got some crazy project going, are you a machinist? you've got some mad fab skills!! I love seeing your projects.

Thanks for your kind comments

I work for an engineering company as their export manager so I'm based in an office all day

When I've any free time I spend it in my workshop at home

Been interested in bikes / karts etc since the age of about 5 so started to do all the work myself from and early age

As I get older I'm getting more particular about the finishing off detail

I'm 35 now

Ive been looking into the TBolt V2 head which will bolt straight onto this engine

It will also take the 192cc conversion as well

I've been told that if I use the Takegawa decomp cam it will enable the starter to turn it over with ease