needle seat questions (96 raider 1100)

[96waveraider1100]

Can anyone tell me what the stock needle seate size is for a 1996 yamaha waveraider?

Thank you,

David

[Mike Whittemore]

Re: needle seat questions (96 raider 1100)

Can anyone tell me what the stock needle seate size is for a 1996 yamaha waveraider?

Thank you,

David

1.5 n/s is stock

[96waveraider1100]

Re: needle seat questions (96 raider 1100)

I just got an email from the sales people at Riva and thy´re saying that the stock needle and seat size for the raider 1100 38mm super bn carb. is 1.2. Is this correct?

thanks,
David

[David3aces]

Re: needle seat questions (96 raider 1100)

I have 1.5s in one I own and it runs good

[96waveraider1100]

Re: needle seat questions (96 raider 1100)

Thank you for the info. Just out of curiousity what is the difference in bigger (1.2,1.5,2.0 etc. etc...) numbers? What does the neddle seat do?Is there a certain size for better low end?


Thanks,

David

[YZrider]

Re: needle seat questions (96 raider 1100)

The larger the N/S you use the LESS the pop-off pressure for any given spring rate on the lever. Generally free flowing flame arrestors work best with less pop-off pressure than is required for the higher manifold pressures generated by the stock type air box/flame arrestor used on most Yamahas. A 1.2 will deliver all the fuel that this carb/engine combination can use. a 1.5 with the stock spring will give a little better off idle transition due to somewhat less pop-off pressure,hope this helps.

[96waveraider1100]

Re: needle seat questions (96 raider 1100)

Thanks YZrider for the info. I went and ordered the 1.5s becuase I have a slight heisitation problem from idle.


David

[YZrider]

Re: needle seat questions (96 raider 1100)

You are most welcome hope it helps you out on your Raider,as an aside the "power plenum" works well on these(R&D brand)