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NC35 (re)build thread - tis the season for 400cc greybikes
- Thread starter thenewwazoo
- Start date
That's a great idea. I figured out what my conversion is based on my current gearing and just use that as a factor with the odometer's KM reading.
thenewwazoo
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Nice, that's a killer idea. Gotta love how much Honda builds their motorcycles out of Lego bricks! 
thenewwazoo
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Listen up you mumble mumble so-and-so, some of us want to get those incredible deals too alright? So leave some crumbs for us poor slobs!
thenewwazoo
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Hahahah a 185 MPH speedo on an NC30
Hahahah a 185 MPH speedo on an NC30
Yeah, the scale being off is kinda crazy.
Where'd he get the carbon surround? I like that...my RVF could use a nice one like that.
The Tyga ones usually have their logo on it (unless you just flipped yours).
thenewwazoo
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The logo on the air intakes was just a sticker.
thenewwazoo
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So I'm sitting here on my couch, literally with the front door open, waiting for the FedEx guy to arrive with a new NC35 tank. Waiting is boring, so why not post. I realize I never actually posted about the Rick Oliver generator conversion.
After my bike left me stranded at a gas station with a flat battery, I tested the charging system and found it to be marginal, at best. All of the components individually tested within spec, but voltages with the bike running (and with a freshly-charged battery) were at the low side of in-spec. I still ended up doing Thunderhill with no problems, as I recall, and I didn't even have to swap batteries between runs. But if there's new shiny parts to be had...
Mmmm tasty.
The gist is that you replace the NC35's stock charging system with parts from a mid-00s GSXR. It's not a simple swap, because the GSXR1000 stator bolts to the cover, while in the NC35 the stator bolts to the case. As a result, you use the new stator and rotor with a custom cover.
Gotta give credit here, this is an exceedingly well-designed and made part. The kit comes totally complete, with the right plug and pins to graft onto the GSXR stator. The gasket is pretty meh (and I ended up tearing it on the install, and having to fix it in North Carolina - nothing quite like riding up to the Tail of the Dragon in the dark and then realizing that your bike is pissing its oil all over the rear tire), but it's serviceable.
Once installed... well, you cover it up with fairing. Which is a shame, because it's really pretty. With it, the bike revs really, really quick. I don't remember the weights any more, but the GSXR parts weighed something like 1/3rd what the stock pieces did. It gives a fairly quick-revving bike some real snap and crackle as the revs jump up. I don't think I'll ever notice the difference in terms of power delivery, but it sure does sound nice when I'm revving it at a stoplight.
After my bike left me stranded at a gas station with a flat battery, I tested the charging system and found it to be marginal, at best. All of the components individually tested within spec, but voltages with the bike running (and with a freshly-charged battery) were at the low side of in-spec. I still ended up doing Thunderhill with no problems, as I recall, and I didn't even have to swap batteries between runs. But if there's new shiny parts to be had...
Mmmm tasty.
The gist is that you replace the NC35's stock charging system with parts from a mid-00s GSXR. It's not a simple swap, because the GSXR1000 stator bolts to the cover, while in the NC35 the stator bolts to the case. As a result, you use the new stator and rotor with a custom cover.
Gotta give credit here, this is an exceedingly well-designed and made part. The kit comes totally complete, with the right plug and pins to graft onto the GSXR stator. The gasket is pretty meh (and I ended up tearing it on the install, and having to fix it in North Carolina - nothing quite like riding up to the Tail of the Dragon in the dark and then realizing that your bike is pissing its oil all over the rear tire), but it's serviceable.
Once installed... well, you cover it up with fairing. Which is a shame, because it's really pretty. With it, the bike revs really, really quick. I don't remember the weights any more, but the GSXR parts weighed something like 1/3rd what the stock pieces did. It gives a fairly quick-revving bike some real snap and crackle as the revs jump up. I don't think I'll ever notice the difference in terms of power delivery, but it sure does sound nice when I'm revving it at a stoplight.
Last edited:
- Joined
- Nov 25, 2003
- Location
- West Sacramento, CA
- Moto(s)
- 2012 Street Triple r,
DRZ400SM, KTM 450SMR, YZ250F (still parting out),
- Name
- Steve
Still loving every word and pic in this thread. 
thenewwazoo
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Bam. There ya go.
thenewwazoo
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Oh RVFlette, why must you treat me so? Even when I tote you in such comfort and style...
Spent yesterday at Sonomears Pointfinion with the Moto Shop crew. Temps were cool but not cold, the track was dry, and I was having a fucking ball. Unfortunately, the RVF decided, about 15 minutes into the third session, that it didn't want to play. It didn't feel like it was going to get better on the track, so I headed in for lunch. I had just put race gas into it (because racebike), so after the fourth session failed to materialize I drained the tank into the Moto Shop Race Jeep, and filled it back up with 91 from another pump. Out for the fifth session and...
No dice.
Both times, the bike absolutely screamed for about three laps. Right about the time it's fully up to temp and I'm throttling out of turn 7, it gets soft at part-throttle. Whack it open hard and it picks back up, until I'm throttling out of 9, at which point it sounds like it's running on two cylinders.
Yesterday was my first day running with the A group (entirely due to a busy B group). There's nothing quite like being a speed bump to some seriously fast riders to get your pace up, and I was easily riding harder and faster than I ever had before. My first thought was the gas, obviously, since that's the only thing that had changed. After draining it out and getting a repeat performance, I started to suspect the petcock. The RVF has a vacuum-operated petcock and, as with all vacuum-operated petcocks, they tend to starve the bowls when you spend a lot of time at WOT. I was spending a lot of time at WOT. The usual approach to fixing that in the moment is to ride at part-throttle and do some sustained engine braking, and give the bowls some time to fill up.
Unfortunately, that wasn't working, and I just didn't have it in me to do the surgery whilst trackside. I'm going to do the HRC-recommended petcock vacuum defeat modification (and change the fuel filter while I'm in there), but I really just don't think I'm going to be able to push the bike hard enough on the street to reproduce the issue. I'm not quite sure how to see if that fixes the issue, to be honest.
I had a great time anyway, and even got to put my massive borrowed pickup to good use. You see, a fellow Moto Shopping rider had violated the cardinal rule of track days: don't ride to the track lest ye crash and be beggin' for a tote. Happily, I had a spot and was headed back past Moto Shop anyway, so there he went.
Next up: Thill on Monday. Guess I better get cracking.
Spent yesterday at Sonomears Pointfinion with the Moto Shop crew. Temps were cool but not cold, the track was dry, and I was having a fucking ball. Unfortunately, the RVF decided, about 15 minutes into the third session, that it didn't want to play. It didn't feel like it was going to get better on the track, so I headed in for lunch. I had just put race gas into it (because racebike), so after the fourth session failed to materialize I drained the tank into the Moto Shop Race Jeep, and filled it back up with 91 from another pump. Out for the fifth session and...
No dice.
Both times, the bike absolutely screamed for about three laps. Right about the time it's fully up to temp and I'm throttling out of turn 7, it gets soft at part-throttle. Whack it open hard and it picks back up, until I'm throttling out of 9, at which point it sounds like it's running on two cylinders.
Yesterday was my first day running with the A group (entirely due to a busy B group). There's nothing quite like being a speed bump to some seriously fast riders to get your pace up, and I was easily riding harder and faster than I ever had before. My first thought was the gas, obviously, since that's the only thing that had changed. After draining it out and getting a repeat performance, I started to suspect the petcock. The RVF has a vacuum-operated petcock and, as with all vacuum-operated petcocks, they tend to starve the bowls when you spend a lot of time at WOT. I was spending a lot of time at WOT. The usual approach to fixing that in the moment is to ride at part-throttle and do some sustained engine braking, and give the bowls some time to fill up.
Unfortunately, that wasn't working, and I just didn't have it in me to do the surgery whilst trackside. I'm going to do the HRC-recommended petcock vacuum defeat modification (and change the fuel filter while I'm in there), but I really just don't think I'm going to be able to push the bike hard enough on the street to reproduce the issue. I'm not quite sure how to see if that fixes the issue, to be honest.
I had a great time anyway, and even got to put my massive borrowed pickup to good use. You see, a fellow Moto Shopping rider had violated the cardinal rule of track days: don't ride to the track lest ye crash and be beggin' for a tote. Happily, I had a spot and was headed back past Moto Shop anyway, so there he went.
Next up: Thill on Monday. Guess I better get cracking.
ircsmith
New member
- Joined
- May 17, 2005
- Location
- sunnyvale
- Moto(s)
- Ulysses, GSXR450, RVF428,
RVF400,
GoPed strung out on Lithium
so when you say you just put race gas in, was said fuel purchased at sonoma-what-ever-its-called-this-week?
I know my friends think I'm crazy but I have had issue with fuel from that track...twice.
bike was running great but then when I refueled started to feel like it was missing. second time was almost the same but it went as far as to foul a plug. have not had a plug foul on any of my bike since about 1986. both times put in local 91 and the bike went back to normal.
I hear ya on the petcock mod but you may have just got crap fuel. of course my RVF has the mod and I think I have another petcock that has had the mod done as well.
I know my friends think I'm crazy but I have had issue with fuel from that track...twice.
bike was running great but then when I refueled started to feel like it was missing. second time was almost the same but it went as far as to foul a plug. have not had a plug foul on any of my bike since about 1986. both times put in local 91 and the bike went back to normal.
I hear ya on the petcock mod but you may have just got crap fuel. of course my RVF has the mod and I think I have another petcock that has had the mod done as well.
thenewwazoo
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Yeah, 100 oct from the pump at the track. I've bought the same gas there before with no problems. I mostly buy it because I'm still so uncertain about the fuelling that any detonation protection makes me feel better, but maybe I'll just skip it now that I'm running 122 mains and the bike feels better.
In any case, almost entirely draining the tank and refilling with 91 didn't improve things much, but it may be all the gas at that pump. Let's just say my wife's car is going to get a nice high-octane blend soon.
In any case, almost entirely draining the tank and refilling with 91 didn't improve things much, but it may be all the gas at that pump. Let's just say my wife's car is going to get a nice high-octane blend soon.