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Forum: Ninjettes At Speed September 13th, 2024, 11:49 PM
Replies: 225
Views: 30,727
Posted By Mohawk
Air operates on Boyles law, if you halve the...

Air operates on Boyles law, if you halve the volume you double the pressure. So if you have a 100mm air gap at 1bar atmospheric pressure & you compress forks 50mm you will have 2bar pressure,...
Forum: 2008 - 2012 Ninja 250R Tech Talk September 13th, 2024, 11:39 PM
Replies: 1
Views: 198
Posted By Mohawk
Just swap in a frontend from a later bike. You...

Just swap in a frontend from a later bike. You will get stronger forks & everything else will fit. Then you only need to check the Tripple-T stem length & these can be changed if needed or different...
Forum: General Motorcycling Discussion September 13th, 2024, 11:33 PM
Replies: 21
Views: 495
Posted By Mohawk
Be careful extending the vacuum line as to long &...

Be careful extending the vacuum line as to long & it won't work well especially if it flexible. But you could add a valve to the vacuum line with the control under the seat. If you fit an electric...
Forum: Motorcycle-related July 25th, 2024, 02:10 PM
Replies: 14
Views: 1,220
Posted By Mohawk
We remember you. Good luck with the newer bike ��

We remember you. Good luck with the newer bike ��
Forum: Ninjettes At Speed July 25th, 2024, 01:40 PM
Replies: 225
Views: 30,727
Posted By Mohawk
I use the YSS Emulators in my X300 running longer...

I use the YSS Emulators in my X300 running longer modified damper rods, they work great. I've used Racetech in previous bikes & these are just as good, so should suit your needs ��
Forum: 1986 - 2007 Ninja 250R Tech Talk June 25th, 2024, 02:58 PM
Replies: 13
Views: 3,866
Posted By Mohawk
Have fun with your build ��

Have fun with your build ��
Forum: 2008 - 2012 Ninja 250R Tech Talk June 14th, 2024, 09:55 AM
Replies: 149
Views: 40,303
Posted By Mohawk
The issue with the head ware was almost certainly...

The issue with the head ware was almost certainly poor people, skimping on maintenance for an engine that revved to 14K since 1984 ! They need to be looked after with quality oil & regular oil...
Forum: General Motorcycling Discussion June 14th, 2024, 09:47 AM
Replies: 12
Views: 2,454
Posted By Mohawk
Mine is a road bike & I got stuck with the need...

Mine is a road bike & I got stuck with the need to mill the liners to fit the crankcase just when Covid arrived. Then before the world was back to normal I found a complete 300 engine with injectors...
Forum: General Motorcycling Discussion June 13th, 2024, 09:49 AM
Replies: 12
Views: 2,454
Posted By Mohawk
I have a set of Pregen cylinders that I had the...

I have a set of Pregen cylinders that I had the liners replaced with ZZR600 ones & bored to 66mm & a set of modified pistons to suit. Needs a little milling between the liners so it will fit in the...
Forum: 2008 - 2012 Ninja 250R Tech Talk June 12th, 2024, 02:26 PM
Replies: 149
Views: 40,303
Posted By Mohawk
Well I'm still here, the bike is too. But I never...

Well I'm still here, the bike is too. But I never got round to finishing the big bore, as I'm now building a 300 based big bore 315cc using new gen cylinders bored to 64mm with ZZR600 pistons.
Forum: Ninjettes At Speed June 12th, 2024, 02:18 PM
Replies: 12
Views: 3,093
Posted By Mohawk
Have a look here for slipons...

Have a look here for slipons https://dan-moto.com/collections/gpx250r
Forum: General Motorcycling Discussion June 12th, 2024, 11:24 AM
Replies: 12
Views: 2,454
Posted By Mohawk
Can you re-engine the bike ? The newer 250 &/or...

Can you re-engine the bike ? The newer 250 &/or 300 engine will fit. I'm updating my ZZR with a 300 engine fitted with 64mm bored newgen 250 cylinders running ZZR600 pistons for 315cc with 12:1...
Forum: General Motorcycling Discussion June 8th, 2024, 01:15 AM
Replies: 12
Views: 2,454
Posted By Mohawk
The pregen + ZZR used standard style exhaust...

The pregen + ZZR used standard style exhaust flange headers, with split collet clamps & are larger bore than the newgen & EX300 which use an internal pipe extension that slots into the head & a flat...
Forum: 2008 - 2012 Ninja 250R Tech Talk April 18th, 2024, 04:07 AM
Replies: 25
Views: 6,124
Posted By Mohawk
So you should be able to run pump gas at that DCR...

So you should be able to run pump gas at that DCR & save a fortune on expensive high octane fuel ��
Forum: 2008 - 2012 Ninja 250R Tech Talk April 17th, 2024, 10:03 AM
Replies: 25
Views: 6,124
Posted By Mohawk
NP what DCR did you end up with ?

NP what DCR did you end up with ?
Forum: 2008 - 2012 Ninja 250R Tech Talk April 17th, 2024, 02:05 AM
Replies: 25
Views: 6,124
Posted By Mohawk
OK so just re-read this thread to get back up to...

OK so just re-read this thread to get back up to speed, it's been a while.
The Pre-gen 250 has always had 12.5:1 SCR. Running 10.6:1 DCR.

The 300 because it was sold in South East Asia as well...
Forum: Ninjettes At Speed February 19th, 2024, 02:44 PM
Replies: 12
Views: 5,881
Posted By Mohawk
So for racing use unsealed chain for minimum...

So for racing use unsealed chain for minimum losses. For the road use an X-ring chain. No real benefit on the road to a race chain or smaller than stock size, it will just wear quicker.
Quality...
Forum: General Motorcycling Discussion February 17th, 2024, 12:24 PM
Replies: 2
Views: 2,972
Posted By Mohawk
The problem with MotoGP's lack of rider testing...

The problem with MotoGP's lack of rider testing means it's much harder to get the bike adjusted to suit the rider. Whilst Marquez is a talented rider he has never been a development rider. Look what...
Forum: 1986 - 2007 Ninja 250R Tech Talk February 17th, 2024, 12:12 PM
Replies: 31
Views: 6,466
Posted By Mohawk
Theres not really much difference as the ZZR came...

Theres not really much difference as the ZZR came with a 17" wheels. That said the KR1-S forks & swingarm moved both wheels backward relative to the frame. That definitely improved the turn in, this...
Forum: 1986 - 2007 Ninja 250R Tech Talk February 13th, 2024, 02:22 AM
Replies: 31
Views: 6,466
Posted By Mohawk
I switched to KR-1S front end on my ZZR so run a...

I switched to KR-1S front end on my ZZR so run a 17" wheel now.
Forum: Riding Skills February 13th, 2024, 01:59 AM
Replies: 5
Views: 1,940
Posted By Mohawk
Book yourself into a race school & learn to ride...

Book yourself into a race school & learn to ride properly. Like everything in life some people have a feel for it, some don't. As mentioned above trying to hang on to faster riders will result in a...
Forum: 2013 - 2017 Ninja 300 Tech Talk February 11th, 2024, 02:16 PM
Replies: 6
Views: 4,473
Posted By Mohawk
I can understand if it wad a remote reflash....

I can understand if it wad a remote reflash. Can't you find a local place to do it ?
If you have an AFR meter just work from that, I did that on one of my other bikes, just made mental note when...
Forum: 2013 - 2017 Ninja 300 Tech Talk February 11th, 2024, 01:31 PM
Replies: 6
Views: 4,473
Posted By Mohawk
I thought you were just worried about running the...

I thought you were just worried about running the engine before dyno tuning & I was referring to the manual dials on the FC. If you have an external AFR meter then just ride it & adjust as you go.
...
Forum: 2013 - 2017 Ninja 300 Tech Talk February 11th, 2024, 09:29 AM
Replies: 6
Views: 4,473
Posted By Mohawk
To get the % increase for the extra air volume,...

To get the % increase for the extra air volume, you need to know the current duty cycle for the injectors. The FC has manual adjust settings, just add 10% at all 3 areas & take it from there. Note...
Forum: 1986 - 2007 Ninja 250R Tech Talk January 6th, 2024, 04:35 PM
Replies: 10
Views: 1,237
Posted By Mohawk
You can't adjust it out. It's not an adjustable...

You can't adjust it out. It's not an adjustable thing, it's a design thing, as in poor/cheap pic one or both.
Showing results 1 to 25 of 492

 
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