20 Most Recent 2001 Triumph Triumph Bonneville - Page 5 Questions & Answers

Hi, Stokebloke57 you may just need a proper clutch adjustment for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Idio Guide to Basic Clutch Adjustment
setting up the clutch pt3 Triumph Bonneville
British Only Motorcycles Parts Inc Triumph BSA and Norton Motorcycle Spares

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Triumph... | Answered on Apr 08, 2017

Hi, Peter your bike off the showroom floor came with a set of Champion N3 spark plugs let me set the record straight about spark plug "HYPE" it's all "SNAKE OIL" Your bike when new came with a specific spark plug designed to give you maximum performance for the type of riding the bike was intended for. In my 60 years of riding motorcycles, the factory OEM spark plug worked just fine. But what about the Multi Pronged-Platinum Core-Golden Tipped-Lazer Cut-Logo Etched-with exclusive patent designed LED cooling fins made in Hermetically sealed laboratories-packaged in Water Proof-Ballistic Transparent Thermoplastic Acrylic Plexiglass and endorsed by NASA that sells for the outrageously low discounted price of only $25 a piece you ask? Excellent question, these plugs only work in the Millennium Falcon. Seriously the bottom line in all these fancy plug designs claims may be true but it would take a team of Nuclear Physicists using classified electronic instruments to prove it. Regular folks like you and me would never see any difference. The temptation to spend 10x the cost of an OEM spark plug is great thanks to the highly paid wall street ad agencies, but trust me, save your money and replace your spark plugs with the ones recommended in your owners manual, if there was a better spark plug out there don't you think all the motorcycle manufacturers would use it? I have wanted to write this for a long time now my work is done, go in peace for all is right with the world. Personally, I always use what the Manufacturer recommends but if you are willing to settle for another brand make sure you get the right converted spark plug and heat range for your bike do your homework before you buy. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Spark plug cross reference
Triumph Motorcycles

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Triumph... | Answered on Mar 02, 2017

Hi, Hai for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. If necessary, transport your bike to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day.
2012 Triumph Bonneville

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Triumph... | Answered on Dec 26, 2015

Try checking the ground line from battery to engine if that is OK
The starter may be faulty

Triumph... | Answered on Jul 01, 2015

The wires for the rear indicator lights should be under the seat on each side and the front ones should be in the headlight shell, the flasher unit is also in the headlight. The wires to the flasher unit should be a white and a light green/brown.

Triumph... | Answered on Apr 05, 2015

Best Answer is the Dealer then ya can,t be wrong

Triumph... | Answered on Mar 13, 2015

The stock Triumph configuration for running without a battery is the addition of a large condenser:


The spring mount helps isolate vibration.

The condenser stores excess alternator current, and feeds it back into the electrical circuit as needed.
Also smooths out fluctuations of the charging current, as a battery would.

Triumph... | Answered on Mar 06, 2015

Sounds like the odometer is faulty and I dont think you can open it up...not that this type of fault is easily repairable anyway.

Triumph... | Answered on Jan 25, 2015

I am guessing if you are riding a '69 Bonneville, you really are interested in what people have to say about the bike and aren't expecting a one line answer that cures all your vibration concerns.

The '69 is still English (right foot) shift, and has the original frame that the Triumph purists love. You probably know that - unless you have never ridden the bike. Most of us who have a Triumph work on them, and I am guessing you do as well, unless you recently inherited or bought the bike on a whim because of its classic look and name.

There are various vibration issues you have to deal with on a Triumph Bonneville. Road vibration, running gear vibration, and engine vibration.

Quick rundown - Run tires at proper pressure. Make sure your wheels are both round and true, and have them re-spoked or replaced if necessary. You would be surprised how a pot-hole can distort a wheel. Check chain and sprockets for wear, replace if necessary. Use proper lubrication. There are modern o-ring chains that are cleaner than original. Make sure your chain is not chafing against the guard. A surprising source of vibration on the Bonnie is the primary chain between engine and transmission. Make sure it is in good condition and tightened to proper tension. If you have to replace the primary chain consider a kevlar toothed belt replacement. They are quieter and smoother. Make sure brakes are true. On the '69 you *might* want to consider upgrading the front brake to a disc system. It will serve you better than the original double leading shoe. Make sure front forks are properly filled to proper level. You can go with aftermarket progressive fork springs, if you want to change suspension for more aggressive riding or higher loads. Also, you can replace your Girling rear shocks with aftermarket. I have had much better ride and handling with aftermarket products. In general, the Brit riders of the 50s and 60s were somewhat smaller guys than we are now. You *might* be at a fighting weight of 138lb, but I am guessing not. On later years, handle bars were rubber mounted, and ends of the bars had lead weights to dampen vibration. Again, you might want to consider that upgrade.

All of that is standard advice for road and running gear on any bike, with a few Triumph specific bits. If your bike is a "runner" you will think of it as modernized and tuned up. If your bike is a "shower" some of those mods might be too modern, and spoil the show value of the bike. Most are invisible - with the exception of the break.

More specifically about that particular bike - vibration really is part of the nature of the original British 360 degree vertical twin engine.

The 360 degree twin, in the T120 and T140 will ALLWAYS vibrate. Not up and down, but front to back. I know that sounds weird, but the crankshaft has counterweights that weigh the same as the pistons and connecting rods. As the pistons go down, the weights come up, and vice versa. So, the engine is balanced in the up and down plane. But, nothing is going back and forth to counterbalance these weights in forward and backward motion. That is the fundamental source of engine vibration. It won't go away. Ever. In the modern reincarnation of the Bonneville they incorporate a shaft, with a weight on it that spins to counteract that motion - vibration was enough of a complaint that the redesign addressed it specifically.

I have a T140. It does shake, but over 2500 rpm or so it isn't so bothersome. The engine in the Bonnie is rigidly bolted to the frame, not rubber mounted.

Things you can do to help with engine vibration? There are tuning issues that can increase vibration or make annoying vibrations at different rpm. If your engine is in tune and running well, and you STILL think it vibrates too much, trade the bike for a 1960s BMW R60 boxer.

Things that can cause non-characteristic vibrations? Make sure both carburetors are tuned exactly the same and throttles come off idle at exactly the same time. This is an annual tuneup item. Also, replace the points based ignition with a Boyer electronic ignition kit. More precise timing spark and more consistent spark will make for smoother running. That is a one time upgrade and it shouldn't break the bank.

If you are really, really concerned about vibration you can make sure you have stock camshaft, run lower compression pistons, and replace stock carbs with more modern CV carbs - Mikunis are common. If you do that, you would lose a lot of the character that makes the Bonneville a great bike. They aren't a Honda 90, or a BMW boxer. They are raw, require kick start, are messy and high maintenance, and have huge variation in build quality.

In the end, there is something about the Triumphs that is magic. Those guys knew how to turn $10 of petrol into 120 miles pure joy. No other bike feels quite like a Bonnie. Some vibration is part of that feel.

There are folk legends of 650s and 750s being disassembled, shipped off to mythical machine shops for "blueprinting" and balancing, but I have never see such a thing happen in 40 years of playing with Triumphs. Fundamentally, the design IS going to shake, unless you redesign it and put in a counterbalancing shaft.

Enjoy the unique character. IF you really want to stop the vibration, just turn the ignition off!

Triumph Progressive Fork Springs for T120 T140
1966 Triumph Bonneville T120 Carburetors Universal
331 Series Boyer Electronic Ignitions
Shock Absorbers For Classic British Motorcycles
Hayward Belt Drive Kits
530 ring Chain

Triumph... | Answered on Dec 29, 2014

Factory says 230cc but I find 190cc best.

Triumph... | Answered on Nov 16, 2014

The factor advise 230cc but 190cc is best, 10w or 15w oil. This is for a late 60's to early 70's model.

Triumph... | Answered on Nov 15, 2014

First of all, why would you? Where are the keys? Are you the owner? What make and model?

Triumph... | Answered on Sep 21, 2014

See if this reference PDF helps.


Hope this Helps!!!!


Triumph... | Answered on Aug 30, 2014

Check for a Short in that Circuit

Triumph... | Answered on May 08, 2014

Usually if it's a rapid series of clicks, it's a low battery, or a bad electrical connection.

One single click is usually a bad starter relay, or a bad starter solenoid.

Triumph... | Answered on Feb 03, 2014

So, what's your question?

Triumph... | Answered on Jan 31, 2014

Probably the charging system isn't working.

Triumph... | Answered on Jan 31, 2014

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