Everything posted by jrsunt
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315r to 4rt ?
If you were coming straight off a modern 2st then you will notice the differences, but as it's your 1st bike in 35 years it will do everything better than your last bike! Seriously though, it's finding and keeping the grip that takes time to learn. It's pretty much a case of practice, practice, practice. Weight is not an issue, unless your doing a lot of trick riding, the suspension and frame more than makes up for the few extra kg's. Enjoy the TRS, it would be good to hear some back to back test reviews though.
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IDLE..WHY SO HIGH?
It needs a high idle to keep everything running like clockwork. The idle can be dropped a little (using the adjuster on the left hand side off the throttle body) but not too much as you can encounter starting issues. Although the idle seems quite fast, proper throttle and clutch control will allow you to do the figure of 8 as slow and tight as you like. Start off big and give yourself plenty of room. Keep at it.
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Montesa cota 315r linkage bearings
Yes, 4rt uses an NN3 part number which relates to the 315.
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315r to 4rt ?
It will do things you don't expect, and the things you expect it to do, it won't. If you're riding purely for fun, then it won't dissapoint and the best bits are in between the sections.
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315r to 4rt ?
Expect a big adjustment period, the 4rt will frustrate you to start with, but the grin on your face will more than make up for it.
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06' 4RT / WHAT GEAR?
If it's that hot then the only gear I'd like to wear would be shorts, t shirt and some trainers, but that wouldn't be very sensible, so stick to the proper attire, grin and bare it, drink plenty of fluids. As for your trails, 1st, 2nd or 3rd will be fine, if it's sticky under the tyres, pull 3rd. Trials tyres don't tend to clean themselves out very well at low speeds, so a burst of speed now and again will help clean the treads.
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Chain recommendation - std or o/x-ring?
I've snapped them all in the Scott, even when new. The only chain I will use now is the DID ERT2. Not cheap but worth every penny. The last one has done 2 Scotts.
- Stalls
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Sidewall puncture
Plug it, use multiple strips (dog turds) to plug larger holes. May leak a little or completely fix it.
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Mitani full protection bashplate
A big enough hit on the sump guard will split the generator cover nearly in half and crack the right crankcase cover, not cheap to replace and not easy to weld. Won't be trying that section again!!!
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Sooty plug and running rich.
Thanks chappo. Not much smooth riding, you must have seen my one and only good ride! At least the weather was good though!
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1998 315R Air Screw & Throttle Stop Screw Settings
Is it the PHBH carb? If the mixture screw is on the cylinder side of the carb it should be "in" to lean and "out" to richen. I think we used to run them at about 2.25 turns out, but that was on the PHBL carb. When the screw is on the air box side, then it's as bilks described. It's been around 13 years since I messed around with those carburettor thingys, so I could be wrong.
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Sooty plug and running rich.
That's the correct iridium. It may be worth trying the 5 if it doesn't get to stretch it's legs very often. I'm using the std filler cap with an open tube to vent.
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Sooty plug and running rich.
I'd take the aftermarket breather off and try without it. The 4rt will soot plugs if it's not warmed up properly and the throttle blipped too much. As far as I know NGK don't make a cr6eh9 iridium equivalent, they do a 7 and a 5. I've been using the 7 iridium for a while, purely for the Scot as it tends to misfire when it's thrashed to within an inch of its life. When we rode abroad for the Europeans the factory lads would give us cr5eh9's.
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2009 4RT Issues?
I don't know, I've had a quick search but can't find it. I'll try again
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2009 4RT Issues?
Some time ago there was a thread running about throttle bodies going past The lock stop, which was fixed by a simple washer. Perhaps you're unlucky enough to have broken 2.
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2009 4RT Issues?
How about the bank angle sensor? Dodgy connection to the plug cap
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2009 4RT Issues?
Only when the s/arm had rubbed through the loom behind the engine. bad earth?
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300rr max engine RPM?
They tick over at 1800rm, so I'm guessing they could pull more than 10k
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montesa 4rt
I can't imagine how many hours it did. 4 ssdts and 6 scotts alone would put at least 120 hours on it. I'd practise 2 times a week for a year or so and I bet there weren't many weekends that I didn't ride from 2006-2009. The bike had oil and filters every 2 months ish, valves were checked and set every 6 months
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montesa 4rt
If you are concerned I'd spend a bit of money now, rather than wait too long and have to spend alot of money. New piston, rings and pin £130 ish, barrell re coat £130, new valves, springs etc probably another 100. If it goes bang then you could be looking at 2k My 2006 had alot of hard hours on it, including several ssdt's, scotts, french 4 days, reeth 3 days, it would have gone for longer but I welded an oil way up which helped kill it
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2016 4rt Sump Gaurd refit
Sledge hammer usually sorts it out...... Make sure you take it off the bike first.
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Chain tensioner bushes
They can be run dry, but a little grease helps keep the cack out. Its probably worth changing the alloy tensioner arm too, they can wear very badly and its likely to have chewed up the rubber orings too. Replace the lot and its goood for another 8. The 315's (possibly up until 2004) used a steel tensioner arm which tended to last longer, which fits straight on.
- Reminder,don't ignore this.
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Cota 4RT Rain and not Starting
Water does not tend to cause many problems with the 4rt, unless its drowned. As said before, the connectors are pretty well sealed. Check the earth under the ht coil and check for a spark. If no spark, link out the bank angle sensor and try again