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Offline beaner

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If you were going land speed racing...
« on: April 23, 2013, 03:23:18 AM »
What would you do to make a modern 2 stroke 125 last through a  mile (1.6 km) of wide open riding?

I've set some automotive land speed records. I have a built Honda 125 4 stroke to go after those records, probably this season. I was looking at the 125 2 stroke modified records, and they're very low. Since my 04 RM 125 is surplus (and fresh) right now, I was wondering what you would do to try and make it last through a half dozen mile passes?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
Ontario, Canada

Offline riffraff

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If you were going land speed racing...
« Reply #1 on: April 23, 2013, 04:30:35 AM »
What are the rules?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
aaahhhhh yes, I remember the good old days

Offline msmola2002

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If you were going land speed racing...
« Reply #2 on: April 23, 2013, 04:44:37 AM »
Look to the road racers - GP bikes have been doing this stuff for years.

this thing is rs125 based.
http://www.visordown.com/motorcycle-news--general-news/official-the-worlds-fastest-125/13965.html
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline Jeram

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If you were going land speed racing...
« Reply #3 on: April 23, 2013, 09:05:10 AM »
higher ratio's of premix, 50-55 degree C thermostat, EGT guage and coolant temp guage to monitor the bike during the run, jetting dialled in perfectly.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline riffraff

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If you were going land speed racing...
« Reply #4 on: April 23, 2013, 02:48:05 PM »
Handlebar mounted choke lever
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
aaahhhhh yes, I remember the good old days

Offline beaner

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If you were going land speed racing...
« Reply #5 on: April 23, 2013, 04:26:13 PM »
What are the rules?

No rules, other than safety rules.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
Ontario, Canada

Offline 2T Institute

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If you were going land speed racing...
« Reply #6 on: April 23, 2013, 04:45:44 PM »
What would you do to make a modern 2 stroke 125 last through a  mile (1.6 km) of wide open riding?

I've set some automotive land speed records. I have a built Honda 125 4 stroke to go after those records, probably this season. I was looking at the 125 2 stroke modified records, and they're very low. Since my 04 RM 125 is surplus (and fresh) right now, I was wondering what you would do to try and make it last through a half dozen mile passes?

Hmm maybe a FMF snarly pipe and a shorty silencer, some head mods and port work?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline beaner

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If you were going land speed racing...
« Reply #7 on: April 23, 2013, 05:20:00 PM »
Neither of those things are going to help it last for a wide open, high RPM mile run. I think the SST would be a far better choice, anyway.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
Ontario, Canada

Offline SachsGS

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If you were going land speed racing...
« Reply #8 on: April 24, 2013, 03:26:43 PM »
I think RiffRaff has the right idea. If you had some kind of "on the fly" adjustable main jet enrichment circuit you could fatten things up if she didn't sound happy towards the end of a run. 
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline 2T Institute

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If you were going land speed racing...
« Reply #9 on: April 25, 2013, 01:24:20 PM »
I think RiffRaff has the right idea. If you had some kind of "on the fly" adjustable main jet enrichment circuit you could fatten things up if she didn't sound happy towards the end of a run. 

By the time you thought it didn't sound any good the piston would be deto-ed to pieces.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline Jeram

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If you were going land speed racing...
« Reply #10 on: April 25, 2013, 01:36:17 PM »
What would you do to make a modern 2 stroke 125 last through a  mile (1.6 km) of wide open riding?

I've set some automotive land speed records. I have a built Honda 125 4 stroke to go after those records, probably this season. I was looking at the 125 2 stroke modified records, and they're very low. Since my 04 RM 125 is surplus (and fresh) right now, I was wondering what you would do to try and make it last through a half dozen mile passes?

Hmm maybe a FMF snarly pipe and a shorty silencer, some head mods and port work?
haha
funny man.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline SachsGS

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If you were going land speed racing...
« Reply #11 on: April 25, 2013, 03:23:22 PM »
Not so. I raced Swedish Huskies for years and wide open on a cold morning fire road you didn't dare take your finger off the choke lever.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline VintageBlueSmoke

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If you were going land speed racing...
« Reply #12 on: April 25, 2013, 05:01:36 PM »
The WHITE power band. For sure.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
08 Speed Bird Quad 110, 08 KTM 144, 04 Suzuki LT-Z400, 03 Gas Gas EC, 300,97 Honda CR144, 96 Husky Boy 50, 88 Husky 400WR, 86 Honda CR125R, 80 Can-Am MX6 400, 75 Husky 360CR, 75 Husky 175CC, 73 Penton Jackpiner 175, 72 Husky 250CR, 72 Husky 125, 72 Rickman-Zundapp 125, (2) 71 Bultaco Pursang Mk

Offline Jeram

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If you were going land speed racing...
« Reply #13 on: April 26, 2013, 01:03:24 AM »
The WHITE power band. For sure.

dont be racist... whats wrong with a colored powerband :P hehehe
« Last Edit: December 31, 1969, 04:00:00 PM by ' »

Offline msmola2002

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If you were going land speed racing...
« Reply #14 on: April 26, 2013, 01:36:58 AM »
The WHITE power band. For sure.

dont be racist... whats wrong with a colored powerband :P hehehe

ktm even comes with white power from factory.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »