[tharian]

Originally Posted by ArizonaJim

The TPS plus the Crankshaft Position Sensor readings are used by the computer (ECU) to establish the correct amount of advance or retard the engines ignition needs at the moment to provide the best running condition.

At slow engine speeds,if the TPS tells the computer the throttle has been greatly opened, the computer (ECU) will retard the spark to prevent pinging (pinking).

If the throttle is opened fully at high engine speeds, the computer will leave the spark timing at full advance to provide full burning of the fuel.

Jim, this holds good on an EFi engine. But, what about the carb version of the Enfield which has a cable that goes to a black box under the seat and the other to the carb?

The accelerator cable splits under the tank and was wondering what exactly is the function of the box under the seat which the service manual mentions as a TPS Switch.

http://www.thinkcept.com/blog/docs/R...%20500_350.pdf
Page 46

[starter]

Originally Posted by tharian

http://www.thinkcept.com/blog/docs/R...%20500_350.pdf
Page 46

Dear Tharian,
Sorry for going off-topic.
Is there such a service manual for CI 350 engines too (for an electra 4S specifically?
Cheers,
Deepak

[The Great]

Originally Posted by starter

Dear Tharian,
Sorry for going off-topic.
Is there such a service manual for CI 350 engines too (for an electra 4S specifically?
Cheers,
Deepak

Here it is bro, this site has all the details.

Cast Iron RE

[ashok_lat]

I am getting my first RE(Classic 350) this 23rd, i have a query with regards to Silencer. I would like to fit RE aftermarket Off Road Exhaust at the time of delivery itself. When inquired with the dealer he has confirmed that the Exhaust cannot be exchanged with the standard and i need to purchase a new one and keep both with myself. They have also mentioned modification of silencer will affect warranty even if it is RE brand. Any suggestions/advice on this.

[P.S.]

Someone please direct me to the Thunderbird 500 PDI

[The Great]

Originally Posted by ashok_lat

I am getting my first RE(Classic 350) this 23rd, i have a query with regards to Silencer. I would like to fit RE aftermarket Off Road Exhaust at the time of delivery itself. When inquired with the dealer he has confirmed that the Exhaust cannot be exchanged with the standard and i need to purchase a new one and keep both with myself. They have also mentioned modification of silencer will affect warranty even if it is RE brand. Any suggestions/advice on this.

Firstly congratulations on coming into the RE family. I am sure you will keep the bike for long. And to ensure its long health read the following:
(as others would say and agree)

- that stick to stock silencer during the run in period. i.e the first 2000 kms approx. Let the engine first settle, then you can do all the possible modifications (and maybe later come back to stock - Experience !!!)

- Wait for the warranty period (2 years) to get over. This way you will play safe, if you have any defects or malfunctioning parts, then the warranty will protect you and then you can go ahead with the silencer change.

Happy Riding

Originally Posted by P.S.

Someone please direct me to the Thunderbird 500 PDI

Here you go - this is from our own TBHP member

[petrolhead_neel]

Originally Posted by ashok_lat

I am getting my first RE(Classic 350) this 23rd, i have a query with regards to Silencer. I would like to fit RE aftermarket Off Road Exhaust at the time of delivery itself. When inquired with the dealer he has confirmed that the Exhaust cannot be exchanged with the standard and i need to purchase a new one and keep both with myself. They have also mentioned modification of silencer will affect warranty even if it is RE brand. Any suggestions/advice on this.

Originally Posted by The Great

Firstly congratulations on coming into the RE family.

- Wait for the warranty period (2 years) to get over. This way you will play safe, if you have any defects or malfunctioning parts, then the warranty will protect you and then you can go ahead with the silencer change.

Happy Riding

The OP is talking about RE's official off road silencer that is available for the Classic series(though have seen people fitting them on Thunderbirds and other bikes from the stable as well). According to our local dealership, this modification does not void warranty as it is an official RE accessory.

Can anyone confirm?

Neel

[ArizonaJim]

Originally Posted by tharian

Jim, this holds good on an EFi engine. But, what about the carb version of the Enfield which has a cable that goes to a black box under the seat and the other to the carb?

The accelerator cable splits under the tank and was wondering what exactly is the function of the box under the seat which the service manual mentions as a TPS Switch.

http://www.thinkcept.com/blog/docs/R...%20500_350.pdf
Page 46

When I made the explanation of what the TPI does, I was careful to word it so that it applies to the Royal Enfield with a carburetor as well as the fuel injected models.

The ignition timing which the ECU sets has nothing to do with whether the engine uses a carburetor or a fuel injector.
Both versions require variations in the ignition timing based on engine speed and throttle position.

This also applies to automobiles, with the new fuel injected ones relying on a TPI sensor and a crankshaft positioning sensor like the Royal Enfield and the older autos with a carburetor relying on the rotating speed of the distributor to determine the engine speed and the engine vacuum in the intake manifold serving to describe the throttle position.

You may remember that on the older carburetor versions, there was a vacuum hose that ran from either a port on the intake manifold or the carburetor to a "vacuum advance" diaphragm on the distributor?

When the engine was idling or the car was just cruising down the road, the high vacuum in the intake manifold would cause the vacuum advance to advance the ignition timing.

When the throttle was opened as the driver pushed down on the accelerator pedal, the vacuum dropped in the intake manifold or carburetor causing the spring loaded vacuum advance to retard the ignition.

This TPI sensor on the Royal Enfield is just a modern way to accomplish the same thing.

[Siddy]

Hi All,

I had a small query regarding the black hose/pipe next to the RE started cap.
It consists of a few cables and goes inside the crankcase & there rubber cap at the end of the pipe which seats on the hole.
I've a bullet 500 and the rubber end of the hose has developed cracks and I can see the cable now. Is this something I should worry about? I am worried if oil would spill out or water might seep inside. The service fellow said there is nothing to worry about. What do you guys think? thanks in advance!

[Siddy]

Took the picture from Jim's old post

I've marked the rubber end which has developed cracks in a red circle. Please let me know your comments, everyone. Thanks!

[ashok_lat]

Originally Posted by The Great

Firstly congratulations on coming into the RE family. I am sure you will keep the bike for long. And to ensure its long health read the following:
(as others would say and agree)

- that stick to stock silencer during the run in period. i.e the first 2000 kms approx. Let the engine first settle, then you can do all the possible modifications (and maybe later come back to stock - Experience !!!)

- Wait for the warranty period (2 years) to get over. This way you will play safe, if you have any defects or malfunctioning parts, then the warranty will protect you and then you can go ahead with the silencer change.

Happy Riding



Here you go - this is from our own TBHP member

Thanks for the inputs, I will keep you posted on my experience with RE.

[ArizonaJim]

Originally Posted by Siddy

Took the picture from Jim's old post

I've marked the rubber end which has developed cracks in a red circle. Please let me know your comments, everyone. Thanks!

The rubber grommet you are asking about is the seal for the electrical wires which run from the alternator and crankshaft speed sensor to the wiring harness.

It seals both external and internal leak paths from the outside to the inside of the right engine cover.

If you do not see any signs of oil leaking thru or around the grommet, it is still doing its job so there is no possibility of water getting inside your engine.

[Siddy]

Originally Posted by ArizonaJim

If you do not see any signs of oil leaking thru or around the grommet, it is still doing its job so there is no possibility of water getting inside your engine.

Thanks for the reply Jim!
There are no leaks around that area, but at times I can see some dirt accumulating at that spot, typically due to little oil coming out maybe, but nothing major. The service fellow told me that there is another rubber seal inside which works as a sealant and the rubber grommet just acts an exterior seal, is this correct?

[ArizonaJim]

Yes.

There is a oil seal inside the metal side cover and there is the rubber part you asked about.

The rubber part you asked about is more like a protection sleeve for the wires where they make a quick 90° bend.

[sechebe]

Hi fellow BHPians

I am a happy owner of STD 350 and really love the rides.

From the very beginning I felt that the suspension is stiff, even in its softest setting. Now I can feel every single imperfection on the road (Kerala Roads except NHs are built for a roller coaster ride) and desperately in search for new set of rear shock absorbs for a start. When asked about the CL350/STD500 gas charged shocks, service engineers are suggesting that it will increase the bounciness of the ride. And yes I am planning to downsize the rims to 18 inch for better tyre options, so the ride height doesn't suffer due to suspension change.

So please help me in finding the best alternative gas charged shocks in the market.